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  • Chemistry  (7,254)
  • Animals
  • 1985-1989  (7,651)
  • 1950-1954
  • 1985  (7,651)
  • 1
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    Rapid mutations in mice? (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1985 Dec 20;230(4732):1406-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4071059" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; Male ; Mice/*genetics ; Mice, Inbred Strains/genetics ; Mice, Mutant Strains/genetics ; *Mutation ; Species Specificity
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    Trypanosomiasis research (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-01-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1985 Jan 11;227(4683):118,120.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3917573" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Animals ; *Animals, Domestic ; Central America ; Eflornithine ; Ornithine/analogs & derivatives/therapeutic use ; Research ; South America ; *Trypanosomiasis/drug therapy
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Pancreatic secretion by nonparallel exocytosis: potential resolution of a long controversy (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-24
    Description: The idea that pancreatic digestive enzyme secretion can occur in a nonparallel manner has been controversial because of its presumed incompatibility with the exocytosis secretory mechanism. Correlation and regression analysis of enzyme output by the rabbit pancreas after it is stimulated with cholecystokinin and chymodenin revealed that digestive enzymes are secreted in a highly linked fashion, compatible with exocytosis and with nonparallel secretion. Thus, exocytosis and nonparallel secretion are not contradictory processes, but rather nonparallel secretion is due to exocytosis from heterogeneous sources within the pancreas.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adelson, J W -- Miller, P E -- New York, N.Y. -- Science. 1985 May 24;228(4702):993-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2408334" target="_blank"〉PubMed〈/a〉
    Keywords: Amylases/secretion ; Animals ; Cholecystokinin/pharmacology ; Chymotrypsinogen/secretion ; *Exocytosis ; Hydrolases/*secretion ; Lipase/secretion ; Pancreas/enzymology/*secretion ; Peptides/pharmacology ; Rabbits ; Regression Analysis
    Print ISSN: 0036-8075
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  • 4
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    Diazepam-binding inhibitor: a neuropeptide located in selected neuronal populations of rat brain (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-07-12
    Description: An endogenous polypeptide of rat brain has been identified that is capable of displacing 1,4-benzodiazepines and the esters of the 3-carboxylic acid derivatives of beta-carbolines from their specific synaptic binding sites. This polypeptide was termed diazepam-binding inhibitor (DBI). Previous studies have shown that DBI injected intraventricularly in rodents elicits "proconflict" responses and antagonizes the "anticonflict" action of benzodiazepines. An antiserum to this peptide, directed toward an immunodeterminant near its amino terminus, makes it possible to detect, measure, and study the neuronal location of this peptide in rat brain. In the rat cerebral cortex, DBI immunoreactivity is located in neurons that are not GABAergic (GABA, gamma-aminobutyric acid); in the cerebellum and hippocampus, however, it might be present also in GABAergic neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alho, H -- Costa, E -- Ferrero, P -- Fujimoto, M -- Cosenza-Murphy, D -- Guidotti, A -- New York, N.Y. -- Science. 1985 Jul 12;229(4709):179-82.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3892688" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Brain Chemistry ; Cerebellum/analysis ; Cerebral Cortex/analysis ; Colchicine/pharmacology ; Diazepam Binding Inhibitor ; Hippocampus/analysis ; Histocytochemistry ; Hypothalamus/analysis ; Immune Sera ; Immunologic Techniques ; Nerve Tissue Proteins/*analysis/immunology ; Radioimmunoassay ; Rats
    Print ISSN: 0036-8075
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  • 5
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    Induction of the intermediate pituitary by stress: synthesis and release of a nonopioid form of beta-endorphin (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-01-25
    Description: beta-Endorphin in the intermediate lobe of the pituitary gland is posttranslationally modified to produce opioid inactive peptides. Whether these are metabolites or biologically relevant products has not been known. It was found that repeated stress induces increased biosynthesis and release of beta-endorphin-like substances from the intermediate lobe of rats and that opioid-inactive N-acetylated beta-endorphin-(1-31) is selectively made and liberated. The possible role of this nonopioid product and the selective release of peptide forms are discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Akil, H -- Shiomi, H -- Matthews, J -- New York, N.Y. -- Science. 1985 Jan 25;227(4685):424-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3155575" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromatography, High Pressure Liquid ; Endorphins/*biosynthesis/blood ; Half-Life ; Kinetics ; Melanocyte-Stimulating Hormones/biosynthesis/blood ; Pituitary Gland/*metabolism ; Rats ; Stress, Physiological/*metabolism ; beta-Endorphin
    Print ISSN: 0036-8075
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  • 6
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    A new HTLV-III/LAV encoded antigen detected by antibodies from AIDS patients (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-11-15
    Description: A newly identified protein from HTLV-III/LAV, the virus implicated as the etiologic agent of the acquired immune deficiency syndrome, was studied. This protein, which has a molecular weight of 27,000 (p27), was shown by amino acid sequencing to have a coding origin 3' to the env gene on the HTLV-III genome. The presence of antibodies to p27 in virus-exposed individuals indicated that this gene is functional in the natural host.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Allan, J S -- Coligan, J E -- Lee, T H -- McLane, M F -- Kanki, P J -- Groopman, J E -- Essex, M -- 2T32-CA09031/CA/NCI NIH HHS/ -- CA23885/CA/NCI NIH HHS/ -- CA37466/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Nov 15;230(4727):810-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2997921" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*immunology/microbiology ; Amino Acid Sequence ; Animals ; Antibodies, Viral/*immunology ; Antibody Formation ; Antigens, Viral/*immunology ; Deltaretrovirus/genetics/*immunology ; Electrophoresis, Polyacrylamide Gel ; Haplorhini/microbiology ; Humans ; Male ; Molecular Weight ; Repetitive Sequences, Nucleic Acid
    Print ISSN: 0036-8075
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  • 7
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    Brain dopamine and serotonin receptor sites revealed by digital subtraction autoradiography (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-03
    Description: Autoradiography combined with image analysis permitted quantitative visualization of dopamine (D2) and serotonin (S2) binding sites in rat brain. Forebrain sections were incubated with tritiated spiroperidol alone or with tritiated spiroperidol plus unlabeled compounds that saturated the D2 or S2 sites. By subtracting the digitized image of an autoradiograph derived from the latter sections from that of the former, the D2 or S2 sites were specifically revealed. The resulting quantitative images demonstrate the differing anatomical distributions of these sites. The D2 site is largely restricted to the striatal complex (caudate-putamen, nucleus accumbens septi, and olfactory tubercle), whereas the S2 site is enriched in layer 5 of motor cortex, the perirhinal and cingulate cortices, and the claustrum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Altar, C A -- O'Neil, S -- Walter, R J Jr -- Marshall, J F -- AG 00538/AG/NIA NIH HHS/ -- AG00096/AG/NIA NIH HHS/ -- NS 20122/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 May 3;228(4699):597-600.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2580352" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoradiography/*methods ; Brain/physiology/*radionuclide imaging ; Butaclamol/metabolism ; Computers ; Ketanserin ; Piperidines/metabolism ; Radiographic Image Enhancement/methods ; Rats ; Receptors, Dopamine/*physiology ; Receptors, Serotonin/*physiology ; Spiperone/metabolism ; Sulpiride/metabolism
    Print ISSN: 0036-8075
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  • 8
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    Expression in brain of a messenger RNA encoding a novel neuropeptide homologous to calcitonin gene-related peptide (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-09-13
    Description: As a consequence of alternative RNA processing events, a single rat gene can generate messenger RNA's (mRNA's) encoding either calcitonin or a neuropeptide referred to as alpha-type calcitonin gene-related peptide (alpha-CGRP). An mRNA product of a related gene has been identified in rat brain and thyroid encoding the protein precursor of a peptide differing from alpha-CGRP by only a single amino acid. The RNA encoding this peptide, which is referred to as beta-CGRP, appears to be the only mature transcript of the beta-CGRP gene. Hybridization histochemistry reveals a similar distribution of alpha- and beta-CGRP mRNA's, but their relative levels of expression vary in different cranial nerve nuclei. Thus beta-CGRP is a new member of a family of related genes with potential functions in regulating the transduction of sensory and motor information.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Amara, S G -- Arriza, J L -- Leff, S E -- Swanson, L W -- Evans, R M -- Rosenfeld, M G -- New York, N.Y. -- Science. 1985 Sep 13;229(4718):1094-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2994212" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Brain Chemistry ; Calcitonin Gene-Related Peptide ; DNA/analysis ; DNA Restriction Enzymes/metabolism ; Gene Expression Regulation ; Nerve Tissue Proteins/*genetics ; RNA, Messenger/*analysis ; Rats
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  • 9
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    Ethanol withdrawal in mice precipitated and exacerbated by hyperbaric exposure (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-08-23
    Description: Mice were fed an ethanol-containing liquid diet for 9 days. On removal of the diet, exposure to 12 atmospheres absolute of a mixture of helium and oxygen precipitated earlier withdrawal, increased withdrawal scores for the first 6 hours, and increased the peak withdrawal intensity compared to dependent animals exposed to control conditions. The enhanced withdrawal did not appear to reflect alterations in ethanol elimination, oxygen or helium partial pressures, body temperature, or general excitability. These results extend to chronically treated animals the evidence that hyperbaric exposure antagonizes the membrane actions of ethanol.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alkana, R L -- Finn, D A -- Galleisky, G G -- Syapin, P J -- Malcolm, R D -- R01AA03972/AA/NIAAA NIH HHS/ -- New York, N.Y. -- Science. 1985 Aug 23;229(4715):772-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4040651" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Atmospheric Pressure ; Cell Membrane/drug effects/physiology ; Ethanol/*adverse effects/pharmacology ; Humans ; Male ; Mice ; Substance Withdrawal Syndrome/*physiopathology
    Print ISSN: 0036-8075
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  • 10
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    The mechanisms of irreversible enzyme inactivation at 100C (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-06-14
    Description: The mechanism of irreversible thermoinactivation of an enzyme has been quantitatively elucidated in the pH range relevant to enzymatic catalysis. The processes causing irreversible inactivation of hen egg-white lysozyme at 100 degrees C are deamidation of asparagine residues, hydrolysis of peptide bonds at aspartic acid residues., destruction of disulfide bonds, and formation of incorrect (scrambled) structures; their relative contributions depend of the pH.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ahern, T J -- Klibanov, A M -- New York, N.Y. -- Science. 1985 Jun 14;228(4705):1280-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4001942" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Asparagine ; Chickens ; Disulfides ; Hot Temperature ; Hydrogen-Ion Concentration ; Kinetics ; *Muramidase ; *Protein Denaturation
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  • 11
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    Encoding of spatial location by posterior parietal neurons (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-10-25
    Description: The cortex of the inferior parietal lobule in primates is important for spatial perception and spatially oriented behavior. Recordings of single neurons in this area in behaving monkeys showed that the visual sensitivity of the retinotopic receptive fields changes systematically with the angle of gaze. The activity of many of the neurons can be largely described by the product of a gain factor that is a function of the eye position and the response profile of the visual receptive field. This operation produces an eye position-dependent tuning for locations in head-centered coordinate space.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Andersen, R A -- Essick, G K -- Siegel, R M -- EY 05522/EY/NEI NIH HHS/ -- NS 07457/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 Oct 25;230(4724):456-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4048942" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Eye Movements ; Fixation, Ocular ; Macaca mulatta ; Neurons/*physiology ; Parietal Lobe/*cytology/physiology ; Psychomotor Performance/*physiology ; Retina/physiology ; Space Perception/*physiology ; Visual Fields
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  • 12
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    Neurovisceral and skeletal GM1-gangliosidosis in dogs with beta-galactosidase deficiency (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-08-02
    Description: Beta-galactosidase-deficient siblings in two litters of English springer spaniel puppies showed a progressive neurological impairment, dwarfism, orbital hypertelorism, and dysostosis multiplex. An excess of GM1-ganglioside was found in the brain. Three abnormal oligosaccharides were present in samples of urine, brain, liver, and cartilage. Light microscopy of selected tissue specimens revealed cytoplasmic vacuoles in neurons, circulating blood cells, macrophages, and chondrocytes. Ultrastructural studies demonstrated that these membrane-bound vacuoles were of two types--one containing lamellated membranes and the other, finely granular material. These clinical and pathological findings are similar to those observed in human patients affected by the infantile form of GM1-gangliosidosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alroy, J -- Orgad, U -- Ucci, A A -- Schelling, S H -- Schunk, K L -- Warren, C D -- Raghavan, S S -- Kolodny, E H -- HD 05515/HD/NICHD NIH HHS/ -- HD04147/HD/NICHD NIH HHS/ -- NS 21765/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 Aug 2;229(4712):470-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3925555" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Diseases, Metabolic/enzymology/genetics/*veterinary ; Dog Diseases/*enzymology/genetics/pathology ; Dogs ; Female ; G(M1) Ganglioside ; Gangliosidoses/enzymology/genetics/pathology/*veterinary ; Humans ; Lactose Intolerance/genetics/metabolism/*veterinary ; Male ; Neurons/pathology ; Oligosaccharides/metabolism ; Pedigree ; Vacuoles/pathology
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  • 13
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    Two distinct populations of calcium channels in a clonal line of pituitary cells (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-01-04
    Description: The whole-cell variant of the patch clamp technique was used to study calcium channels in GH3 cells. Two distinct populations of calcium channels, first recognized from their closing kinetics, were observed. The slowly closing channels are activated in a relatively negative voltage range and are inactivated within 100 milliseconds. They conduct barium and calcium about equally well. The fast closing channels are activated at more positive voltages, are not inactivated during a 100-millisecond pulse, conduct barium in preference to calcium, and are activated slightly more rapidly than the slowly closing channels.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Armstrong, C M -- Matteson, D R -- New York, N.Y. -- Science. 1985 Jan 4;227(4682):65-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2578071" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Barium/metabolism ; Calcium/*metabolism ; Clone Cells ; Electrophysiology ; Ion Channels/metabolism/*physiology ; Kinetics ; Membrane Potentials ; Pituitary Gland/*cytology/metabolism ; Rats
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  • 14
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    Identification of the protein encoded by the E6 transforming gene of bovine papillomavirus (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-10-25
    Description: Papillomaviruses (PV) contain several conserved genes that may encode nonstructural proteins; however, none of these predicted gene products have been identified. Papillomavirus E6 genes are retained and expressed as RNA in PV-associated human and animal carcinomas and cell lines. This suggests that the E6 gene product may be important in the maintenance of the malignant phenotype. The E6 open reading frame of the bovine papillomavirus (BPV) genome has been identified as one of two BPV genes that can independently transform mouse cells in vitro. A polypeptide encoded by this region of BPV was produced in a bacterial expression vector and used to raise antisera. The antisera specifically immunoprecipitated the predicted 15.5-kilodalton BPV E6 protein from cells transformed by the E6 gene. The E6 protein was identified in both the nuclear and membrane fractions of these transformed cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Androphy, E J -- Schiller, J T -- Lowy, D R -- 5-F32-CA-07237/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Oct 25;230(4724):442-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2996134" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bovine papillomavirus 1/*genetics ; Cell Line ; Cell Transformation, Viral ; *Genes, Viral ; Mice ; Oncogenes ; Papillomaviridae/*genetics ; RNA, Messenger/genetics ; Rabbits ; Rats ; Tumor Virus Infections/genetics ; Viral Proteins/*genetics/isolation & purification
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  • 15
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    A neuroendocrine marker in tissues of the immune system (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-10-04
    Description: Antibodies to chromogranin, a secretory protein marker for the diffuse neuroendocrine system, were used to analyze rat lymphoreticular tissues by means of immunochemistry and immunohistochemistry. Chromogranin-positive cells were present in spleen, lymph node, thymus, and fetal liver. When these organs were gently dispersed and separated on a Ficoll gradient, the chromogranin-immunoreactive cells became enriched in the dense red-cell pellets. The unexpected distribution of these neuroendocrine cells in all immunologically relevant structures suggests that they may link the nervous and immunological systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Angeletti, R H -- Hickey, W F -- K07-NS00889/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 Oct 4;230(4721):89-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3898368" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Chromogranins/*analysis ; Electrophoresis, Polyacrylamide Gel ; Histocytochemistry ; Immunosorbent Techniques ; Lymphoid Tissue/*analysis ; Mononuclear Phagocyte System/*analysis ; Nerve Tissue Proteins/*analysis ; Rats
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  • 16
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    Fluorescence digital imaging microscopy in cell biology (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-10-18
    Description: Developments in microscope, sensor, and image-processing technologies have led to integrated systems for the quantification of low-light-level emission signals from biological samples. Specificity is provided in the form of monoclonal antibodies and other ligands or enzyme substrates conjugated with efficient fluorophores. Fluorescent probes are also available for cellular macromolecular constituents and for free ions of biological interest such as H+ and Ca2+. The entire spectrum of photophysical phenomena can be exploited. Representative data are presented from studies of DNA conformation and architecture in polytene chromosomes and from studies of receptor-mediated endocytosis, calcium distribution, and the organization of the contractile apparatus in muscle cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arndt-Jovin, D J -- Robert-Nicoud, M -- Kaufman, S J -- Jovin, T M -- FO6 TWOO960/TW/FIC NIH HHS/ -- New York, N.Y. -- Science. 1985 Oct 18;230(4723):247-56.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4048934" target="_blank"〉PubMed〈/a〉
    Keywords: Analog-Digital Conversion ; Animals ; Cell Cycle ; Cells/*cytology ; Cells, Cultured ; Chromosomes/ultrastructure ; Drosophila ; Fluorescent Dyes ; Kinetics ; Microscopy, Fluorescence/instrumentation/*methods ; Salivary Glands/cytology
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  • 17
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    Alpha 2-adrenergic mechanisms in prefrontal cortex associated with cognitive decline in aged nonhuman primates (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-12-13
    Description: This study provides evidence that the alpha 2-adrenergic receptor agonist clonidine ameliorates the cognitive deficits exhibited by aged nonhuman primates through drug actions at alpha 2 receptors. Furthermore, pharmacological profiles in animals with lesions restricted to the dorsolateral prefrontal cortex indicate that this area may be the site of action for some of clonidine's beneficial effects. These results demonstrate that alpha-adrenergic systems contribute to cognitive function and suggest a new strategy for treating memory disorders in aged humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arnsten, A F -- Goldman-Rakic, P S -- NIMH#00298/MH/NIMH NIH HHS/ -- NIMH#38546/MH/NIMH NIH HHS/ -- NIMH-08641/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1985 Dec 13;230(4731):1273-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2999977" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; Cerebral Cortex/drug effects/*physiology ; Clonidine/*pharmacology ; Cognition/*drug effects ; Female ; Hydroxydopamines/pharmacology ; Macaca mulatta ; Memory/drug effects/physiology ; Oxidopamine ; Prazosin/pharmacology ; Receptors, Adrenergic, alpha/*physiology ; Yohimbine/pharmacology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 18
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    Isolation of a mammalian sequence capable of conferring cell cycle regulation to a heterologous gene (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-11-29
    Description: A hybrid gene containing the 5' sequence of a hamster histone H3 gene and the coding sequence of the bacterial neomycin-resistance gene (neo) was constructed. Upon transfection into the hamster fibroblast cell line K12, the hybrid gene exhibited cell cycle-dependent regulation, as evidenced by the maximal accumulation of the neo transcripts during synthesis of DNA in the cell cycle. In addition, cells arrested in the prereplicative phase, as a consequence of the K12 temperature-sensitive mutation, produced significantly less neo messenger RNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Artishevsky, A -- Grafsky, A -- Lee, A S -- GM 31138/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Nov 29;230(4729):1061-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4059922" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Cycle ; Cricetinae ; DNA Replication ; DNA, Recombinant ; Drug Resistance ; *Gene Expression Regulation ; Histones/*genetics ; Neomycin/pharmacology ; Poly A/genetics ; Promoter Regions, Genetic ; Transcription, Genetic
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  • 19
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    Induced expression of the glucocorticoid receptor in the rat intermediate pituitary lobe (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-07-19
    Description: Synthesis and release of pro-opiomelanocortin-derived peptides are under differential regulation in the anterior and intermediate lobes of the pituitary. Glucocorticoids inhibit synthesis of pro-opiomelanocortin-related peptides in the anterior lobe but not in the intermediate lobe. These two lobes are also characterized by differences in neural innervation and blood flow, both of which may represent routes of access for regulatory factors (the intermediate lobe is avascular). Immunoreactive glucocorticoid receptor, which can be demonstrated in many tissues, is absent from the intermediate lobe. Immunocytochemistry was used to demonstrate the presence of immunoreactive glucocorticoid receptor in the intermediate lobe after pituitary stalk transection, neurointermediate lobe grafts to kidney capsule, or monolayer culture of neurointermediate pituitary cells. This appearance of the glucocorticoid receptor is presumably a consequence of removal of intermediate pituitary cells from neural influences that may be responsible for inhibiting their expression under normal conditions in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Antakly, T -- Sasaki, A -- Liotta, A S -- Palkovits, M -- Krieger, D T -- NSO2893/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 Jul 19;229(4710):277-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3892690" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Immunoenzyme Techniques ; Immunoglobulin G/immunology ; Male ; Melanocyte-Stimulating Hormones/physiology ; Pituitary Gland/analysis/*metabolism/surgery ; Pituitary Gland, Anterior/analysis/metabolism ; Rabbits/immunology ; Rats ; Rats, Inbred F344 ; Receptors, Glucocorticoid/*biosynthesis/genetics ; Receptors, Steroid/*biosynthesis ; Serotonin/analysis
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  • 20
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    Circumsporozoite protein of Plasmodium vivax: gene cloning and characterization of the immunodominant epitope (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-11-15
    Description: The gene encoding the circumsporozoite (CS) protein of the human malaria parasite Plasmodium vivax has been cloned. The deduced sequence of the protein consists of 373 amino acids with a central region of 19 tandem repeats of the nonapeptide Asp-Arg-Ala-Asp/Ala-Gly-Gln-Pro-Ala-Gly. A synthetic 18-amino acid peptide containing two tandem repeats binds to a monoclonal antibody directed to the CS protein of Plasmodium vivax and inhibits the interaction of this antibody with the native protein in sporozoite extracts. The portions of the CS gene that do not contain repeats are closely related to the corresponding regions of the CS genes of two simian malarias, Plasmodium cynomolgi and Plasmodium knowlesi. In contrast, the homology between the CS genes of Plasmodium vivax and Plasmodium falciparum, another malaria parasite of humans, is very limited.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arnot, D E -- Barnwell, J W -- Tam, J P -- Nussenzweig, V -- Nussenzweig, R S -- Enea, V -- New York, N.Y. -- Science. 1985 Nov 15;230(4727):815-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2414847" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies, Monoclonal/immunology ; Antigens, Surface/*genetics/immunology ; Cloning, Molecular ; Epitopes/*genetics/immunology ; Haplorhini/parasitology ; Humans ; Malaria/parasitology ; Nucleic Acid Hybridization ; Plasmodium/immunology ; Plasmodium vivax/*genetics/immunology ; *Protozoan Proteins ; Repetitive Sequences, Nucleic Acid
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  • 21
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    Specific expression of hepatitis B surface antigen (HBsAg) in transgenic mice (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-12-06
    Description: Two transgenic mice were obtained that contain in their chromosomes the complete hepatitis B virus (HBV) genome except for the core gene. These mice secrete particles of HBV surface antigen (HBsAg) in the serum. In one mouse, HBV DNA sequences that had integrated at two different sites were shown to segregate independently in the first filial generation (F1) and only one of the sequences allowed expression of the surface antigen. Among these animals the males produced five to ten times more HBsAg than the females. A 2.1-kilobase messenger RNA species comigrating with the major surface gene messenger RNA is expressed specifically in the liver in the two original mice. The results suggest that the HBV sequences introduced into the mice are able to confer a tissue-specific expression to the S gene. In addition, the HBV transgenic mice represent a new model for the chronic carrier state of hepatitis B virus infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Babinet, C -- Farza, H -- Morello, D -- Hadchouel, M -- Pourcel, C -- CA37300-02/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Dec 6;230(4730):1160-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3865370" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carrier State ; DNA, Recombinant ; Female ; *Genetic Engineering ; Hepatitis B/genetics ; Hepatitis B Surface Antigens/*genetics ; Humans ; Male ; Mice ; Mice, Inbred C57BL/genetics ; Nucleic Acid Hybridization ; RNA, Messenger/genetics
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  • 22
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    Reversibility of progression of the transformed phenotype in Ad5-transformed rat embryo cells (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-31
    Description: The carcinogenic process is extremely complex and is affected by diverse environmental and host factors. The mechanism for the gradual development of the transformed phenotype (a process termed "progression") was studied in type 5 adenovirus (Ad5)-transformed rat embryo cells. Progression was not correlated with major changes in the pattern of integration of viral DNA sequences. Instead, it was associated with an increased methylation of integrated viral sequences other than those corresponding to the E1 transforming genes of Ad5. A single exposure of progressed cells to the demethylating agent 5-azacytidine (Aza) resulted in a stable reversion to the unprogressed state of the original parental clone. A further selection of cells after growth in agar allowed the isolation of Aza-treated clones that had regained the progressed phenotype. These observations indicate that progression is a reversible process and suggest that progression may be associated with changes in the state of methylation of one or more specific genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Babiss, L E -- Zimmer, S G -- Fisher, P B -- CA-33434/CA/NCI NIH HHS/ -- CA-35675/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 May 31;228(4703):1099-101.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2581317" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviruses, Human/*genetics ; Animals ; Azacitidine/*pharmacology ; Cell Division ; Cell Transformation, Viral/*drug effects ; Cells, Cultured ; DNA, Neoplasm/genetics ; DNA, Viral/genetics ; Gene Expression Regulation ; Genes, Viral ; *Methylation ; Mice ; Neoplasms, Experimental/*pathology ; Rats ; Rats, Inbred Strains/embryology ; Transcription, Genetic
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  • 23
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    Immunogenicity of synthetic peptides from circumsporozoite protein of Plasmodium falciparum (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-24
    Description: In a study of recombinant proteins that might be useful in developing a vaccine against malaria, synthetic peptides from the circumsporozoite (CS) protein of Plasmodium falciparum were found to be immunogenic for mice and rabbits. Antibody to peptides from the repeating region of the CS protein recognized native CS protein and blocked sporozoite invasion of human hepatoma cells in vitro. Antibodies to peptides from regions I and II had no biologic activity, although antibody to region I recognized processed CS protein by Western blot analysis. These data support the feasibility of developing a vaccine against the sporozoite stage of the malaria parasite by using synthetic peptides of the repeating region of the CS protein conjugated to a carrier protein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ballou, W R -- Rothbard, J -- Wirtz, R A -- Gordon, D M -- Williams, J S -- Gore, R W -- Schneider, I -- Hollingdale, M R -- Beaudoin, R L -- Maloy, W L -- New York, N.Y. -- Science. 1985 May 24;228(4702):996-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2988126" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antibodies/immunology ; Antibody Formation ; Antigens, Surface/*immunology ; Carcinoma, Hepatocellular ; Cell Line ; Cross Reactions ; Fluorescent Antibody Technique ; Humans ; Immune Sera/immunology ; Liver Neoplasms ; Malaria/prevention & control ; Mice ; Peptides/chemical synthesis/*immunology ; Plasmodium/immunology ; Plasmodium falciparum/*immunology/physiology ; Precipitin Tests ; *Protozoan Proteins ; Rabbits ; Vaccines/immunology
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  • 24
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    Induction of autoimmune thyroiditis in chickens by dietary iodine (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-10-18
    Description: Clinical studies have suggested that excess dietary iodine promotes autoimmune thyroiditis; however, the lack of a suitable animal model has hampered investigation of the phenomenon. In this study, different amounts of potassium iodide were added to the diets of chicken strains known to be genetically susceptible to autoimmune thyroiditis. Administration of iodine during the first 10 weeks of life increased the incidence of the disease, as determined by histology and the measurement of autoantibodies to triiodothyronine, thyroxine, and thyroglobulin. Further support for the relation between iodine and autoimmune thyroiditis was provided by an experiment in which iodine-deficient regimens decreased the incidence of thyroid autoantibodies in a highly susceptible strain. These results suggest that excessive consumption of iodine in the United States may be responsible for the increased incidence of autoimmune thyroiditis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bagchi, N -- Brown, T R -- Urdanivia, E -- Sundick, R S -- AM20028/AM/NIADDK NIH HHS/ -- AM30975/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1985 Oct 18;230(4723):325-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4048936" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoantibodies/*analysis ; Autoimmune Diseases/*chemically induced ; Chickens ; Diet ; Iodine/*adverse effects ; Lymphocytes/immunology ; Thyroid Gland/immunology ; Thyroiditis/*immunology
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  • 25
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    Continued expression of neonatal myosin heavy chain in adult dystrophic skeletal muscle (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-02-15
    Description: The expression of myosin heavy chain isoforms was examined in normal and dystrophic chicken muscle with a monoclonal antibody specific for neonatal myosin. Adult dystrophic muscle continued to contain neonatal myosin long after it disappeared from adult normal muscle. A new technique involving western blotting and peptide mapping demonstrated that the immunoreactive myosin in adult dystrophic muscle was identical to that found in neonatal normal muscle. Immunocytochemistry revealed that all fibers in the dystrophic muscle failed to repress neonatal myosin heavy chain. These studies suggest that muscular dystrophy inhibits the myosin gene switching that normally occurs during muscle maturation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bandman, E -- AM31731/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1985 Feb 15;227(4688):780-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3969567" target="_blank"〉PubMed〈/a〉
    Keywords: Age Factors ; Animals ; Animals, Newborn/physiology ; Antibodies, Monoclonal ; Cell Differentiation ; Chickens ; Gene Expression Regulation ; Muscles/*cytology ; Muscular Dystrophy, Animal/*metabolism ; Myosins/genetics/immunology/*metabolism
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  • 26
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    A new in vitro model of seizure activity (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-12-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barnes, D M -- New York, N.Y. -- Science. 1985 Dec 13;230(4731):1261.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4071049" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Epilepsy/*physiopathology ; Hippocampus/physiopathology
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  • 27
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    Disease linked to a faulty potassium channel (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-12-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barnes, D M -- New York, N.Y. -- Science. 1985 Dec 13;230(4731):1260.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2416055" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoimmune Diseases/*physiopathology ; Ion Channels/*physiology ; Membrane Potentials ; Mice ; T-Lymphocytes/*physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 28
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    What makes nerves regenerate? (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-11-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barnes, D M -- New York, N.Y. -- Science. 1985 Nov 29;230(4729):1024-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4059920" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Communication ; Extracellular Matrix/*physiology ; Laminin/physiology ; *Nerve Regeneration ; Optic Nerve/physiology ; Peripheral Nerves/*physiology ; Silicones
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  • 29
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    Action potentials halt growth cone elongation (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-12-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barnes, M -- New York, N.Y. -- Science. 1985 Dec 13;230(4731):1261.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4071050" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Cell Differentiation ; Neurons/cytology/*physiology
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  • 30
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    Evolution of bunyaviruses by genome reassortment in dually infected mosquitoes (Aedes triseriatus) (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-11-01
    Description: Aedes triseriatus mosquitoes became dually infected after ingesting two mutants of LaCrosse (LAC) virus simultaneously or after ingesting, by interrupted feeding, the two viruses sequentially within a 2-day period. After 2 weeks of incubation, approximately 25 percent of the vectors contained new virus genotypes as the result of RNA segment reassortment. New viruses were transmitted when the mosquitoes fed on mice. Viruses ingested more than 2 days after the initial infecting virus did not cause superinfection of the mosquito vectors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beaty, B J -- Sundin, D R -- Chandler, L J -- Bishop, D H -- AI 15400/AI/NIAID NIH HHS/ -- AI 19688/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1985 Nov 1;230(4725):548-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4048949" target="_blank"〉PubMed〈/a〉
    Keywords: Aedes/*microbiology ; Animals ; Blood ; Bunyaviridae/*genetics ; Genotype ; Insect Vectors ; Mutation ; Phenotype ; RNA, Viral/analysis ; Time Factors
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  • 31
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    T-cell receptor beta-chain expression: dependence on relatively few variable region genes (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-08-09
    Description: Fifteen independently isolated complementary DNA clones that contain T-cell receptor (TCR) V beta genes were sequenced and found to represent 11 different V beta genes. When compared with known sequences, 14 different V beta genes could be defined from a total of 25 complementary DNA's; 11 clones therefore involved repeated usage of previously identified V beta's. Based on these data, we calculate a maximum likelihood estimate of the number of expressed germline V beta genes to be 18 with an upper 95 percent confidence bound of 30 genes. Southern blot analysis has shown that most of these genes belong to single element subfamilies which show very limited interstrain polymorphism. The TCR beta-chain diversity appears to be generated from a limited V beta gene pool primarily by extensive variability at the variable-diversity-joining (V-D-J) junctional site, with no evidence for the involvement of somatic hypermutation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Behlke, M A -- Spinella, D G -- Chou, H S -- Sha, W -- Hartl, D L -- Loh, D Y -- GM07200/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Aug 9;229(4713):566-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3875151" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Base Sequence ; Chromosome Mapping ; Cloning, Molecular ; Dna ; Gene Pool ; *Genetic Variation ; Humans ; Hybridomas ; Immunoglobulin Variable Region/genetics ; Mice ; Mice, Inbred BALB C/genetics ; Mice, Inbred C57BL/genetics ; Mice, Inbred Strains/genetics ; Receptors, Antigen, T-Cell/*genetics ; Species Specificity ; Spleen ; T-Lymphocytes ; Thymus Gland
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  • 32
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    The mosaic genome of warm-blooded vertebrates (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-05-24
    Description: Most of the nuclear genome of warm-blooded vertebrates is a mosaic of very long (much greater than 200 kilobases) DNA segments, the isochores; these isochores are fairly homogeneous in base composition and belong to a small number of major classes distinguished by differences in guanine-cytosine (GC) content. The families of DNA molecules derived from such classes can be separated and used to study the genome distribution of any sequence which can be probed. This approach has revealed (i) that the distribution of genes, integrated viral sequences, and interspersed repeats is highly nonuniform in the genome, and (ii) that the base composition and ratio of CpG to GpC in both coding and noncoding sequences, as well as codon usage, mainly depend on the GC content of the isochores harboring the sequences. The compositional compartmentalization of the genome of warm-blooded vertebrates is discussed with respect to its evolutionary origin, its causes, and its effects on chromosome structure and function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bernardi, G -- Olofsson, B -- Filipski, J -- Zerial, M -- Salinas, J -- Cuny, G -- Meunier-Rotival, M -- Rodier, F -- New York, N.Y. -- Science. 1985 May 24;228(4702):953-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4001930" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Composition ; Base Sequence ; Biological Evolution ; Centrifugation, Density Gradient ; Chickens/*genetics ; Chromosome Banding ; Codon ; Cytosine/analysis ; DNA/analysis/*genetics ; DNA Replication ; DNA, Viral/genetics ; Gene Amplification ; *Genes ; Genes, Viral ; Guanine/analysis ; Humans ; Mammals/*genetics ; Mice/genetics ; Mutation ; Rabbits/genetics ; Recombination, Genetic ; Repetitive Sequences, Nucleic Acid ; Xenopus/*genetics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Comparative toxinology of Loxosceles reclusa and Corynebacterium pseudotuberculosis (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-03
    Description: In contrast to other kinds of phospholipases, phospholipases D that are toxic for humans and animals are not commonly encountered as constituents of venoms or as products of pathogenic microorganisms. Toxic phospholipases D are present, however, in the venom of the brown recluse spider (Loxosceles reclusa) and in supernatants or filtrates of cultures of Corynebacterium pseudotuberculosis. Although the two enzyme toxins are derived from phylogenetically disparate entities, they are similar in molecular weight, charge, substrate specificity, and in several biological activities. They are immunologically distinguishable.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bernheimer, A W -- Campbell, B J -- Forrester, L J -- New York, N.Y. -- Science. 1985 May 3;228(4699):590-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3983643" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arthropod Venoms/*pharmacology ; Bacterial Toxins/immunology/*pharmacology ; *Corynebacterium ; Cross Reactions ; Erythrocytes/drug effects ; Hemolysis/drug effects ; Phospholipases/pharmacology ; Sheep ; Sphingomyelin Phosphodiesterase/pharmacology ; Spider Venoms/immunology/*pharmacology ; Spiders
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    Genetic damage, mutation, and the evolution of sex (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-09-20
    Description: The two fundamental aspects of sexual reproduction, recombination and outcrossing, appear to be maintained respectively by the advantages of recombinational repair and genetic complementation. Genetic variation is produced as a by-product of recombinational repair, but it may not be the function of sexual reproduction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bernstein, H -- Byerly, H C -- Hopf, F A -- Michod, R E -- 1 K04 HD00583/HD/NICHD NIH HHS/ -- GM 27219/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Sep 20;229(4719):1277-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3898363" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Chromosomes ; Crosses, Genetic ; *DNA Repair ; Female ; Genes, Lethal ; Humans ; Male ; *Mutation ; Recombination, Genetic ; Reproduction ; *Sex Determination Analysis
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    Trigeminal-taste interaction in palatability processing (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-10
    Description: Peripheral transection of the sensory branches of the trigeminal nerve in rats unbalanced palatability, selectively reducing the ingestive actions elicited by preferred tastes but leaving unchanged the aversive actions elicited by unpreferred tastes. The reduction in the number of positive ingestive actions occurred even though the capacity to emit these actions remained unimpaired. These findings show that there is an interaction between somatosensation and gustation in the processing of palatability.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berridge, K C -- Fentress, J C -- New York, N.Y. -- Science. 1985 May 10;228(4700):747-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3992242" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Food Preferences ; Humans ; Male ; Rats ; Rats, Inbred Strains ; Taste/*physiology ; Tongue/physiology ; Trigeminal Nerve/*physiology
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    Steroid-dependent survival of identifiable neurons in cultured ganglia of the moth Manduca sexta (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-07-05
    Description: Adult emergence at the end of metamorphosis in the moth Manduca sexta is followed by the death of abdominal interneurons and motoneurons. Abdominal ganglia removed from insects before this period of naturally occurring cell death and maintained in vitro showed neuronal death confined to the same cells that normally die in vivo. Addition of physiological levels of the steroid 20-hydroxyecdysone to the culture system prevented the selective death of these motoneurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bennett, K L -- Truman, J W -- New York, N.Y. -- Science. 1985 Jul 5;229(4708):58-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4012311" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Survival/drug effects ; Culture Techniques ; Ecdysterone/*pharmacology ; Ganglia/cytology ; Interneurons/physiology ; Lepidoptera/*growth & development ; Metamorphosis, Biological ; Moths/cytology/*growth & development ; Motor Neurons/physiology ; Nerve Degeneration/drug effects ; Neurons/*physiology
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    Intrinsic and extrinsic factors in protein antigenic structure (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-09-06
    Description: Recent advances in the preparation of synthetic peptide vaccines and the use of synthetic peptides as probes of antigenic structure and function have led to renewed interest in the prediction of antigenic sites recognized by antibodies and T cells. This review focuses on antibodies. Features intrinsic to the antigen, such as hydrophilicity and mobility, may be useful in the selection of amino acid sequences of the native protein that will elicit antibodies cross-reacting with peptides, or sequences which, as peptides, will be more likely to elicit antibodies cross-reactive with the native protein. Structural mobility may also contribute to protein-protein interactions in general. However, the entire accessible surface of a protein is likely to be detectable by a large enough panel of antibodies. Which of these antibodies are made in any individual depends on factors extrinsic to the antigen molecule, host factors such as self-tolerance, immune response genes, idiotype networks, and the immunoglobulin structural gene repertoire.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berzofsky, J A -- New York, N.Y. -- Science. 1985 Sep 6;229(4717):932-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2410982" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibody Specificity ; Antigen-Antibody Complex ; B-Lymphocytes/immunology ; Clone Cells/immunology ; *Epitopes ; Genes ; Genes, MHC Class II ; Humans ; Immune Tolerance ; Immunoglobulin Idiotypes ; Lymphocyte Cooperation ; Motion ; Myoglobin/immunology ; Probability ; Protein Conformation ; Proteins/*immunology ; Solubility ; Structure-Activity Relationship ; Surface Properties ; T-Lymphocytes, Helper-Inducer/immunology ; T-Lymphocytes, Regulatory/immunology ; Water
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    Passive immunization against cachectin/tumor necrosis factor protects mice from lethal effect of endotoxin (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-08-30
    Description: A highly specific polyclonal rabbit antiserum directed against murine cachectin/tumor necrosis factor (TNF) was prepared. When BALB/c mice were passively immunized with the antiserum or with purified immune globulin, they were protected against the lethal effect of the endotoxin lipopolysaccharide produced by Escherichia coli. The prophylactic effect was dose-dependent and was most effective when the antiserum was administered prior to the injection of the endotoxin. Antiserum to cachectin/TNF did not mitigate the febrile response of endotoxin-treated animals, and very high doses of endotoxin could overcome the protective effect. The median lethal dose of endotoxin in mice pretreated with 50 microliters of the specific antiserum was approximately 2.5 times greater the median lethal dose for controls given nonimmune serum. The data suggest that cachectin/TNF is one of the principal mediators of the lethal effect of endotoxin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beutler, B -- Milsark, I W -- Cerami, A C -- AM01314/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1985 Aug 30;229(4716):869-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3895437" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Endotoxins/*toxicity ; Escherichia coli ; Female ; Glycoproteins/immunology/*physiology ; Immune Sera ; Immunization, Passive ; Lethal Dose 50 ; Lipopolysaccharides/*toxicity ; Mice ; Mice, Inbred BALB C ; Proteins/immunology/*physiology ; Tumor Necrosis Factor-alpha
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    Active T-cell receptor genes have intron deoxyribonuclease hypersensitive sites (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-08-09
    Description: The T-cell receptor beta-chain gene has a nuclease hypersensitive site in several kinds of T cells, which does not appear in B cells expressing immunoglobulins. Conversely, the kappa immunoglobulin gene shows a known hypersensitive site at its enhancer element in B cells, as expected, but this site is absent in T cells. As is the case with immunoglobulin genes, the T-cell receptor site lies within the gene, in the intron separating joining and constant region segments. These nuclease hypersensitive DNA configurations in the introns of active T-cell receptor and immunoglobulin genes may arise from control elements that share ancestry but have diverged to the extent that each normally acts only in lymphoid cells which use the proximal gene product.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bier, E -- Hashimoto, Y -- Greene, M I -- Maxam, A M -- AI 19901/AI/NIAID NIH HHS/ -- CA 22427/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Aug 9;229(4713):528-34.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3927483" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/metabolism ; Base Sequence ; Binding Sites ; Cell Line ; Chromosome Mapping ; Collodion ; Deoxyribonuclease I/*metabolism ; Enhancer Elements, Genetic ; Gene Expression Regulation ; Humans ; Hybridomas ; Immunochemistry ; Immunoglobulin Fragments/*genetics ; Immunoglobulin Heavy Chains/genetics ; Immunoglobulin kappa-Chains/genetics ; Mice ; Receptors, Antigen, T-Cell/*genetics ; T-Lymphocytes/*metabolism ; Transcription, Genetic
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    Protection from genital herpes simplex virus type 2 infection by vaccination with cloned type 1 glycoprotein D (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-03-22
    Description: Guinea pigs were vaccinated with truncated herpes simplex virus type-1 (HSV-1) glycoprotein D produced in the genetically engineered mammalian cell line gD10.2. Vaccinated animals formed antibodies that neutralized both HSV-1 and herpes simplex virus type 2 (HSV-2) in an in vitro neutralization assay. Vaccinated animals were challenged with HSV-2 by intravaginal infection. Animals that received the immunogen in Freund's complete adjuvant were completely protected from the clinical manifestations of genital HSV-2 infection. Animals that received the immunogen incorporated in alum adjuvants were partly protected from clinical disease; the infections that did develop were significantly less severe than those that occurred in control animals injected with adjuvant alone. The results demonstrate that immunization with a purified viral protein can provide significant protection against primary genital infection by HSV-2 in guinea pigs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berman, P W -- Gregory, T -- Crase, D -- Lasky, L A -- New York, N.Y. -- Science. 1985 Mar 22;227(4693):1490-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2983428" target="_blank"〉PubMed〈/a〉
    Keywords: Adjuvants, Immunologic ; *Aluminum Compounds ; Aluminum Hydroxide ; Animals ; Antibodies, Viral/biosynthesis ; Cloning, Molecular ; Female ; Freund's Adjuvant ; Guinea Pigs ; Herpes Genitalis/*prevention & control ; Male ; Neutralization Tests ; Phosphates ; Simplexvirus/*immunology ; Vaccination ; *Viral Envelope Proteins ; Viral Proteins/genetics/*immunology ; *Viral Vaccines/immunology
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    Plasticity of the differentiated state (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-11-15
    Description: Heterokaryons provide a model system in which to examine how tissue-specific phenotypes arise and are maintained. When muscle cells are fused with nonmuscle cells, muscle gene expression is activated in the nonmuscle cell type. Gene expression was studied either at a single cell level with monoclonal antibodies or in mass cultures at a biochemical and molecular level. In all of the nonmuscle cell types tested, including representatives of different embryonic lineages, phenotypes, and developmental stages, muscle gene expression was induced. Differences among cell types in the kinetics, frequency, and gene dosage requirements for gene expression provide clues to the underlying regulatory mechanisms. These results show that the expression of genes in the nuclei of differentiated cells is remarkably plastic and susceptible to modulation by the cytoplasm. The isolation of the genes encoding the tissue-specific trans-acting regulators responsible for muscle gene activation should now be possible.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blau, H M -- Pavlath, G K -- Hardeman, E C -- Chiu, C P -- Silberstein, L -- Webster, S G -- Miller, S C -- Webster, C -- GM07149/GM/NIGMS NIH HHS/ -- GM26717/GM/NIGMS NIH HHS/ -- HD18179/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1985 Nov 15;230(4727):758-66.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2414846" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Animals ; Antibodies, Monoclonal ; *Cell Differentiation ; Cell Fusion ; Cell Nucleus/ultrastructure ; Epidermis/cytology ; Fetus/metabolism ; Fibroblasts/cytology ; Gene Expression Regulation ; Genes ; HeLa Cells/metabolism ; Humans ; Hybrid Cells/metabolism ; Keratins/physiology ; Kinetics ; Liver/cytology ; Mice ; Muscle Development ; Muscles/cytology ; Myosins/genetics ; Phenotype ; Transcription, Genetic ; Transcriptional Activation
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    Biosynthesis and secretion of proatrial natriuretic factor by cultured rat cardiocytes (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-12-06
    Description: Rat atrial natriuretic factor (ANF) is translated as a 152-amino acid precursor preproANF. PreproANF is converted to the 126-amino acid proANF, the storage form of ANF in the atria. ANF isolated from the blood is approximately 25 amino acids long. It is demonstrated here that rat cardiocytes in culture store and secrete proANF. Incubation of proANF with serum produced a smaller ANF peptide. PreproANF seems to be processed to proANF in the atria, and proANF appears to be released into the blood, where it is converted by a protease to a smaller peptide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bloch, K D -- Scott, J A -- Zisfein, J B -- Fallon, J T -- Margolies, M N -- Seidman, C E -- Matsueda, G R -- Homcy, C J -- Graham, R M -- Seidman, J G -- 1R23CA33570/CA/NCI NIH HHS/ -- HL07208/HL/NHLBI NIH HHS/ -- HL26215/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1985 Dec 6;230(4730):1168-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2933808" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Atrial Natriuretic Factor/*biosynthesis/genetics/secretion ; Autoradiography ; Cells, Cultured ; Electrophoresis, Polyacrylamide Gel ; Heart/physiology ; Immune Sera/immunology ; Myocardium/*cytology/metabolism ; Protein Precursors/*biosynthesis/genetics/secretion ; RNA, Messenger/genetics ; Rabbits/immunology ; Rats
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    Selective extraction of small and large molecules from the cerebrospinal fluid by Purkinje neurons (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-04-19
    Description: Cerebellar Purkinje neurons accumulated propidium iodide, granular blue, and horseradish peroxidase conjugated to wheat germ agglutinin but not unconjugated horseradish peroxidase, bisbenzimide, or Evans blue when these compounds were infused into the lateral cerebral ventricles of awake, unrestrained rats. Accumulation of propidium iodide by Purkinje neurons of the vermis was associated with a reproducible behavioral abnormality characterized by truncal tremor, ataxia, and nystagmus. Both the accumulation of propidium iodide in Purkinje cells and the behavioral abnormality were prevented by prior intracerebroventricular administration of ouabain or colchicine, drugs that block neuronal transport processes. The ability of cerebellar Purkinje neurons to extract small and large molecules from the cerebrospinal fluid has important implications for their physiology and pathology.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Borges, L F -- Elliott, P J -- Gill, R -- Iversen, S D -- Iversen, L L -- New York, N.Y. -- Science. 1985 Apr 19;228(4697):346-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2580350" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bisbenzimidazole/metabolism ; Cerebrospinal Fluid/*physiology ; Dendrites/physiology ; Evans Blue/metabolism ; Horseradish Peroxidase/metabolism ; Humans ; Male ; Propidium/metabolism/pharmacology ; Purkinje Cells/*metabolism/physiology ; Rats ; Rats, Inbred Strains ; Tremor/chemically induced/physiopathology
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    Hematopoietic histoincompatibility reactions by NK cells in vitro: model for genetic resistance to marrow grafts (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-12-20
    Description: In certain strains of mice, bone marrow grafts from parental donors fail to grow in first-generation hybrid mice. This "hybrid resistance" of nonsensitized F1 hybrid mice to the engraftment of parental hematopoietic transplants contradicts the classical laws of transplantation and is dependent on a radioresistant but immunogenetically specific effector mechanism. Studies in a new in vitro model reveal that committed hematopoietic precursors of parental origin can be inactivated by direct contact with natural killer-like splenic effectors from F1 mice. The reaction requires genetically restricted recognition, since only parental competitors syngeneic to the target bone marrow cells partially reversed this inactivation. Models of this type may be useful in studying the possible role of natural resistance in bone marrow transplantation in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bordignon, C -- Daley, J P -- Nakamura, I -- AM-13969/AM/NIADDK NIH HHS/ -- CA-12844/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Dec 20;230(4732):1398-401.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3906897" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Marrow/immunology ; *Bone Marrow Transplantation ; Colony-Forming Units Assay ; Crosses, Genetic ; Hematopoietic Stem Cells/immunology ; *Histocompatibility ; Hybridization, Genetic ; Immunity, Innate ; Killer Cells, Natural/*immunology ; Mice ; Mice, Inbred C57BL ; Mice, Inbred Strains ; Models, Biological
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    Strategies and applications of in vitro mutagenesis (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-09-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Botstein, D -- Shortle, D -- New York, N.Y. -- Science. 1985 Sep 20;229(4719):1193-201.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2994214" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Base Sequence ; Cloning, Molecular/*methods ; DNA Transposable Elements ; DNA, Bacterial ; DNA, Recombinant ; Drosophila melanogaster/genetics ; Escherichia coli/genetics ; In Vitro Techniques ; Mutagenicity Tests/*methods ; *Mutation ; Oligonucleotides ; Phenotype
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    Preparation of bispecific antibodies by chemical recombination of monoclonal immunoglobulin G1 fragments (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-07-05
    Description: Preparation of bispecific antibodies by the chemical reassociation of monovalent fragments derived from monoclonal mouse immunoglobulin G1 is inefficient because of side reactions during reoxidation of the multiple disulfide bonds linking the heavy chains. These side reactions can be avoided by using specific dithiol complexing agents such as arsenite and effecting disulfide formation with a thiol activating agent such as 5,5'-dithiobis(2-nitrobenzoic acid). In this way bispecific antibodies were obtained in high yield and free of monospecific contaminants from monoclonal mouse immunoglobulin G1 fragments. The bispecific antibodies were used as agents for the selective immobilization of enzymes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brennan, M -- Davison, P F -- Paulus, H -- New York, N.Y. -- Science. 1985 Jul 5;229(4708):81-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3925553" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibodies, Monoclonal ; *Antibody Specificity ; Arsenic ; *Arsenites ; Avidin/immunology ; Disulfides ; Dithionitrobenzoic Acid ; Immunoglobulin Fab Fragments ; *Immunoglobulin G ; Luciferases/immunology ; Macromolecular Substances ; Mice ; *Sodium Compounds ; beta-Galactosidase/immunology
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    Stereoscopic images in confocal (tandem scanning) microscopy (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-12-13
    Description: Stereoscopic pair images with parallel projection geometry are obtained by through-focusing along two inclined axes while recording two (summed and stacked) images with a microscope with a very shallow depth of field. The two stack images sample the same depth slice of translucent or reflective specimens. The method will work most conveniently with a tandem scanning microscope (a direct-view, confocal scanning optical microscope). This is a direct method for recording stereo images that can be used to the limit of resolution in optical microscopy. It demonstrates a previously unrealized advantage of confocal optical microscopy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boyde, A -- New York, N.Y. -- Science. 1985 Dec 13;230(4731):1270-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4071051" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone and Bones/anatomy & histology ; Cerebellum/anatomy & histology ; Mice ; Microscopy/*methods ; Rats ; Spinal Cord/anatomy & histology
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    Prolactin stimulation of maternal behavior in female rats (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-02-15
    Description: Inexperienced, hypophysectomized female rats treated with steroids were used in experiments to investigate the roles of the pituitary gland and prolactin in the expression of maternal behavior. Administration of ovine prolactin or treatment with ectopic pituitary grafts, which release prolactin into the circulation, stimulated maternal care in these females toward rat young. Steroid treatment alone, while stimulating maternal behavior in rats with intact pituitary glands, did not facilitate maternal responsiveness in hypophysectomized females. These findings indicate a stimulatory behavioral role for pituitary prolactin in the establishment of maternal care and suggest that exposure to prolactin during pregnancy helps to stimulate the immediate onset of maternal behavior at parturition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bridges, R S -- DiBiase, R -- Loundes, D D -- Doherty, P C -- HD 06333/HD/NICHD NIH HHS/ -- HD19789/HD/NICHD NIH HHS/ -- P 30-HD 06645/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1985 Feb 15;227(4688):782-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3969568" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Estradiol/pharmacology ; Female ; Hypophysectomy ; *Maternal Behavior ; Progesterone/pharmacology ; Prolactin/*physiology ; Rats
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    Hormonal control of the anatomical specificity of motoneuron-to-muscle innervation in rats (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-03-15
    Description: Motoneurons of the spinal nucleus of the bulbocavernosus innervate bulbocavernosus muscles in male rats. Adult female rats normally lack both the spinal nucleus and its target muscles. Prenatal treatment of females with testosterone propionate resulted in adults having, like males, both the spinal nucleus and its target muscles. However, prenatal treatment with dihydrotestosterone propionate preserves the muscles but not the motoneurons. This paradoxical condition might result from (i) bulbocavernosus muscles without innervation; (ii) muscles innervated by morphologically unrecognizable motoneurons; (iii) muscles innervated by a very few spinal nucleus cells, each innervating many bulbocavernosus fibers; or (iv) muscles innervated by motoneurons outside their normal anatomical locus in the spinal nucleus. The results of retrograde marker injections into the bulbocavernosus muscles of females treated with androgen refute the first three possibilities and confirm the last: the different androgen treatments result in anatomically distinct spinal motor nuclei innervating bulbocavernosus muscles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Breedlove, S M -- NS19790/NS/NINDS NIH HHS/ -- RR07006/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1985 Mar 15;227(4692):1357-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3975621" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dihydrotestosterone/analogs & derivatives/pharmacology ; Female ; Male ; Motor Neurons/anatomy & histology/drug effects/*physiology ; Muscles/drug effects/*innervation ; Pregnancy ; Rats ; Rats, Inbred Strains ; Sex Differentiation/drug effects ; Testosterone/*pharmacology
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    Animal welfare legislation (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-12-06
    Description: In the article "Rates of elementary reactions: Measurement and applications" by F. Kaufman (25 Oct., p. 393), the equation in column 2 on page 394 should have read: [See formula in Source Pdf.]〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brown, G E Jr -- New York, N.Y. -- Science. 1985 Dec 6;230(4730):1106.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4071038" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Experimentation ; *Animal Welfare ; Animals ; *Animals, Laboratory ; *Federal Government ; *Government Regulation ; *Legislation, Medical ; National Institutes of Health (U.S.) ; United States
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    Selective inhibition of fibronectin-mediated cell adhesion by monoclonal antibodies to a cell-surface glycoprotein (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-06-21
    Description: Fibroblasts possess several distinct mechanisms that control cellular adhesion to extracellular matrix macromolecules. Monoclonal antibodies to a 140-kilodalton (kD) cell surface glycoprotein inhibited the adhesion of fibroblastic Chinese hamster ovary cells to fibronectin-coated substrata but did not inhibit adhesion to substrata coated with vitronectin, laminin, serum, or other adhesive macromolecules. Thus the 140-kD glycoprotein appears to be involved in the fibronectin-mediated adhesion mechanism but not in other adhesion processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brown, P J -- Juliano, R L -- GM26165/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Jun 21;228(4706):1448-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4012302" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; *Cell Adhesion ; Cell Membrane/immunology/*metabolism ; Cells, Cultured ; Cricetinae ; Cricetulus ; Fibroblasts/metabolism ; Fibronectins/*metabolism ; Glycoproteins/immunology/*metabolism ; Molecular Weight
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    Evoked mechanical responses of isolated cochlear outer hair cells (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-01-11
    Description: Intracellular current administration evokes rapid, graded, and bidirectional mechanical responses of isolated outer hair cells from the mammalian inner ear. The cells become shorter in response to depolarizing and longer in response to hyperpolarizing currents in the synaptic end of the cell. The cells respond with either an increase or decrease in length to transcellular alternating current stimulation. The direction of the movement with transcellular stimuli appears to be frequency dependent. Iontophoretic application of acetylcholine to the synaptic end of the cell decreases its length. The microarchitecture of the organ of Corti permits length changes of outer hair cells in a manner that could significantly influence the mechanics of the cochlear partition and thereby contribute to the exquisite sensitivity of mammalian hearing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brownell, W E -- Bader, C R -- Bertrand, D -- de Ribaupierre, Y -- New York, N.Y. -- Science. 1985 Jan 11;227(4683):194-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3966153" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/pharmacology ; Animals ; Electric Stimulation ; Guinea Pigs ; Hair Cells, Auditory/cytology/drug effects/*physiology ; Ionophores ; Membrane Potentials
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    Association of crossover points with topoisomerase I cleavage sites: a model for nonhomologous recombination (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-11-22
    Description: Nonhomologous DNA recombination is frequently observed in somatic cells upon the introduction of DNA into cells or in chromosomal events involving sequences already stably carried by the genome. In this report, the DNA sequences at the crossover points for excision of SV40 from chromosomes were shown to be associated with eukaryotic topoisomerase I cleavage sites in vitro. The precise location of the cleavage sites relative to the crossover points has suggested a general model for nonhomologous recombination mediated by topoisomerase I.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bullock, P -- Champoux, J J -- Botchan, M -- CA 30490/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Nov 22;230(4728):954-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2997924" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; Cell Transformation, Viral ; Chromatin/ultrastructure ; Chromosome Mapping ; DNA Topoisomerases, Type I/*metabolism ; Rats ; *Recombination, Genetic ; Simian virus 40/*genetics
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    Aromatic-aromatic interaction: a mechanism of protein structure stabilization (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-07-05
    Description: Analysis of neighboring aromatic groups in four biphenyl peptides or peptide analogs and 34 proteins reveals a specific aromatic-aromatic interaction. Aromatic pairs (less than 7 A between phenyl ring centroids) were analyzed for the frequency of pair type, their interaction geometry (separation and dihedral angle), their nonbonded interaction energy, the secondary structural locations of interacting residues, their environment, and their conservation in related molecules. The results indicate that on average about 60 percent of aromatic side chains in proteins are involved in aromatic pairs, 80 percent of which form networks of three or more interacting aromatic side chains. Phenyl ring centroids are separated by a preferential distance of between 4.5 and 7 A, and dihedral angles approaching 90 degrees are most common. Nonbonded potential energy calculations indicate that a typical aromatic-aromatic interaction has energy of between -1 and -2 kilocalories per mole. The free energy contribution of the interaction depends on the environment of the aromatic pair. Buried or partially buried pairs constitute 80 percent of the surveyed sample and contribute a free energy of between -0.6 and -1.3 kilocalories per mole to the stability of the protein's structure at physiologic temperature. Of the proteins surveyed, 80 percent of these energetically favorable interactions stabilize tertiary structure, and 20 percent stabilize quaternary structure. Conservation of the interaction in related molecules is particularly striking.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burley, S K -- Petsko, G A -- New York, N.Y. -- Science. 1985 Jul 5;229(4708):23-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3892686" target="_blank"〉PubMed〈/a〉
    Keywords: *Amino Acids ; Animals ; Biological Evolution ; Calcium-Binding Proteins ; Chymotrypsin/antagonists & inhibitors ; *DNA-Binding Proteins ; Globins ; Hot Temperature ; Humans ; Immunoglobulin Fab Fragments ; Oligopeptides ; Protein Binding ; *Protein Conformation ; Repressor Proteins ; Structure-Activity Relationship ; Thermodynamics ; Viral Proteins ; Viral Regulatory and Accessory Proteins ; Water
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    Crystallographic structure of the octameric histone core of the nucleosome at a resolution of 3.3 A (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-03
    Description: The structure of the (H2A-H2B-H3-H4)2 histone octamer has been determined by means of x-ray crystallographic techniques at a resolution of 3.3 angstroms. The octamer is a prolate ellipsoid 110 angstroms long and 65 to 70 angstroms in diameter, and its general shape is that of a rugby ball. The size and shape are radically different from those determined in earlier studies. The most striking feature of the histone octamer is its tripartite organization, that is, a central (H3-H4)2 tetramer flanked by two H2A-H2B dimers. The DNA helix, placed around the octamer in a path suggested by the features on the surface of the protein, appears like a spring holding the H2A-H2B dimers at either end of the (H3-H4)2 tetramer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burlingame, R W -- Love, W E -- Wang, B C -- Hamlin, R -- Nguyen, H X -- Moudrianakis, E N -- New York, N.Y. -- Science. 1985 May 3;228(4699):546-53.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3983639" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chickens ; Chromatin/ultrastructure ; DNA/metabolism ; *Histones/metabolism ; Models, Chemical ; Nucleosomes/*ultrastructure ; Protein Conformation ; X-Ray Diffraction
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    Increased plasma interleukin-1 activity in women after ovulation (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-03-08
    Description: The polypeptide interleukin-1 mediates many host responses to infection and inflammation. A method was developed for studying interleukin-1 levels in human plasma from febrile patients. Interleukin-1 activity was also consistently found in plasma samples from women in the luteal phase of their menstrual cycle. This activity was neutralized by a specific antiserum to human interleukin-1 and was low in plasma from healthy men and preovulatory women. Thus interleukin-1 appears to have a role in normal physiological conditions as well as in disease states.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cannon, J G -- Dinarello, C A -- AI 15614/AI/NIAID NIH HHS/ -- F32 AI 06951/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1985 Mar 8;227(4691):1247-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3871966" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Temperature ; Female ; Fever/physiopathology ; Follicular Phase ; Humans ; Interleukin-1/*analysis/physiology ; *Luteal Phase ; Male ; Mice ; Ovulation
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    A Plasmodium falciparum antigen that binds to host erythrocytes and merozoites (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-11-01
    Description: Antigens that bind to erythrocytes were identified in the supernatant fluids of a cultured human malaria parasite (Plasmodium falciparum). A 175-kilodalton (175K) antigen bound only to erythrocytes susceptible to invasion. The 175K antigen from the Camp or the FCR-3 strain also bound to merozoites. However, the antigen did not bind to merozoites when merozoites and supernatant antigens were from different strains unless proteinase inhibitors were present. Moreover, erythrocytes coated with supernatant antigens from the Camp or FCR-3 strain were invaded normally by merozoites of the homologous strain but were partially resistant to invasion by merozoites of the heterologous strain. The 175K antigen may be a receptor acting as a "bridge" between erythrocytes and merozoites.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Camus, D -- Hadley, T J -- New York, N.Y. -- Science. 1985 Nov 1;230(4725):553-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3901257" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Protozoan/*metabolism ; Chymotrypsin/metabolism ; Electrophoresis, Polyacrylamide Gel ; Erythrocytes/*metabolism ; Guinea Pigs ; Humans ; Macaca mulatta ; Molecular Weight ; Neuraminidase/metabolism ; Plasmodium falciparum/*immunology ; Protease Inhibitors/pharmacology ; Rabbits ; Trypsin/metabolism
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    Tissue factor gene localized to human chromosome 1 (1pter----1p21) (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-09-06
    Description: Tissue factor (tissue thromboplastin, coagulation factor III), a protein component of cell membranes, is an essential cofactor for factor VII-dependent initiation of blood coagulation. Since no tissue factor-deficient condition has been described, it is one of only a few proteins of the coagulation system for which the pattern of inheritance has not been ascertained. Because of the species-specificity of tissue factor activity and the availability of a very sensitive chromogenic assay, it was possible in the present study to use somatic cell hybrids to assign the chromosomal location of the tissue factor structural gene (F3) to human chromosome 1 (1pter----1p21).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carson, S D -- Henry, W M -- Shows, T B -- GM-20454/GM/NIGMS NIH HHS/ -- HD-05196/HD/NICHD NIH HHS/ -- HL-31408/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1985 Sep 6;229(4717):991-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4023720" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Chromosomes, Human, 1-3 ; Genes ; Humans ; Hybrid Cells ; Mice ; Thromboplastin/*genetics ; Translocation, Genetic
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    Imaging elemental distribution and ion transport in cultured cells with ion microscopy (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-06-28
    Description: Both elemental distribution and ion transport in cultured cells have been imaged by ion microscopy. Morphological and chemical information was obtained with a spatial resolution of approximately 0.5 micron for sodium, potassium, calcium, and magnesium in freeze-fixed, cryofractured, and freeze-dried normal rat kidney cells and Chinese hamster ovary cells. Ion transport was successfully demonstrated by imaging Na+-K+ fluxes after the inhibition of Na+- and K+ -dependent adenosine triphosphatase with ouabain. This method allows measurements of elemental (isotopic) distribution to be related to cell morphology, thereby providing the means for studying ion distribution and ion transport under different physiological, pathological, and toxicological conditions in cell culture systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chandra, S -- Morrison, G H -- R01GM24314/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Jun 28;228(4707):1543-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2990033" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/analysis ; Cell Line ; Cells, Cultured ; Cricetinae ; Elements/*analysis ; Female ; Freeze Fracturing ; Kidney/*ultrastructure ; Magnesium/analysis ; Microscopy/methods ; Ouabain/pharmacology ; Ovary/*ultrastructure ; Potassium/analysis ; Rats ; Sodium/analysis ; Sodium-Potassium-Exchanging ATPase/antagonists & inhibitors ; Tissue Distribution
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    Disorganization of cultured vascular endothelial cell monolayers by fibrinogen fragment D (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-03-22
    Description: Fibrinogen fragment D, which is heterogeneous, has several important biological functions. Human fibrinogen fragments D94 (molecular weight, 94,000), D78 (78,000), and E (52,000) were purified. Fragments D78 and D94 but not purified fibrinogen or fragment E specifically caused disorganization of bovine aortic endothelial cells cultured as monolayers. Within 2 hours of exposure to pathophysiological concentrations of fragment D, the confluent endothelial cells retracted from each other and projected pseudopodia. These disturbed cells subsequently became rounded and detached from the substrate. The actin present in stress fibers in stationary monolayer cells was diffusely redistributed in cells with fragment D-induced alterations in morphology. This effect was not observed in monolayers of kidney epithelial cells. The results demonstrate a specific effect of fibrinogen fragment D on the disorganization of cultured vascular endothelial cell monolayers and suggest that fragment D plays a role in the pathogenesis of syndromes with vascular endothelial damage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dang, C V -- Bell, W R -- Kaiser, D -- Wong, A -- New York, N.Y. -- Science. 1985 Mar 22;227(4693):1487-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4038818" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/analysis ; Animals ; Aorta ; Cattle ; Cell Adhesion/drug effects ; Cell Line ; Cells, Cultured ; Cytoskeleton/drug effects ; Endothelium/analysis/*cytology/drug effects/ultrastructure ; Epithelial Cells ; Fibrin Fibrinogen Degradation Products/*pharmacology ; Humans ; Kidney ; Pseudopodia/drug effects
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    Mammalian and yeast ras gene products: biological function in their heterologous systems (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-04-12
    Description: Activated versions of ras genes have been found in various types of malignant tumors. The normal versions of these genes are found in organisms as diverse as mammals and yeasts. Yeast cells that lack their functional ras genes, RASSC-1 and RASSC-2, are ordinarily nonviable. They have now been shown to remain viable if they carry a mammalian rasH gene. In addition, yeast-mammalian hybrid genes and a deletion mutant yeast RASSC-1 gene were shown to induce morphologic transformation of mouse NIH 3T3 cells when the genes had a point mutation analogous to one that increases the transforming activity of mammalian ras genes. The results establish the functional relevance of the yeast system to the genetics and biochemistry of cellular transformation induced by mammalian ras genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DeFeo-Jones, D -- Tatchell, K -- Robinson, L C -- Sigal, I S -- Vass, W C -- Lowy, D R -- Scolnick, E M -- CA37702/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Apr 12;228(4696):179-84.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3883495" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Transformation, Neoplastic/metabolism ; DNA, Recombinant/metabolism ; Drosophila/genetics ; Mice ; Neoplasm Proteins/*genetics/metabolism ; Nucleic Acid Hybridization ; *Oncogenes ; Plasmids ; Saccharomyces cerevisiae/*genetics
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    Swiss voters reject ban on vivisection (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-12-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dickson, D -- New York, N.Y. -- Science. 1985 Dec 13;230(4731):1257.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4071046" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Experimentation ; Animals ; Government Regulation ; Switzerland ; *Vivisection
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    Activated proto-onc genes: sufficient or necessary for cancer? (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-10
    Description: Proto-onc genes are normal cellular genes that are related to the transforming (onc) genes of retroviruses. Because of this relationship these genes are now widely believed to be potential cancer genes. In some tumors, proto-onc genes are mutated or expressed more than in normal cells. Under these conditions, proto-onc genes are hypothesized to be active cancer genes in one of two possible ways: The one gene-one cancer hypothesis suggests that one activated proto-onc gene is sufficient to cause cancer. The multigene-one cancer hypothesis suggests that an activated proto-onc gene is a necessary but not a sufficient cause of cancer. However, mutated or transcriptionally activated proto-onc genes are not consistently associated with the tumors in which they are occasionally found and do not transform primary cells. Further, no set of an activated proto-onc gene and a complementary cancer gene with transforming function has yet been isolated from a tumor. Thus, there is still no proof that activated proto-onc genes are sufficient or even necessary to cause cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Duesberg, P H -- CA 11426/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 May 10;228(4700):669-77.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3992240" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Transformation, Neoplastic/metabolism ; Chickens ; DNA, Neoplasm/genetics ; Genes, Viral ; Humans ; Kirsten murine sarcoma virus/genetics ; Lymphoma/genetics ; Melanoma/genetics ; Mice ; Mutation ; Neoplasms/etiology/*genetics ; *Oncogenes ; Plasmacytoma/genetics ; Rats ; Retroviridae/genetics ; Sarcoma, Experimental/genetics ; Transduction, Genetic ; Translocation, Genetic ; Tumor Virus Infections/genetics
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    Inhibition of lymphocyte proliferation by a synthetic peptide homologous to retroviral envelope proteins (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-10-25
    Description: The retroviral transmembrane envelope protein p15E is immunosuppressive in that it inhibits immune responses of lymphocytes, monocytes, and macrophages. A region of p15E has been conserved among murine and feline retroviruses; a homologous region is also found in the transmembrane envelope proteins of the human retroviruses HTLV-I and HTLV-II and in a putative envelope protein encoded by an endogenous C-type human retroviral DNA. A peptide (CKS-17) was synthesized to correspond to this region of homology and was examined for its effects on lymphocyte proliferation. CKS-17 inhibited the proliferation of an interleukin-2-dependent murine cytotoxic T-cell line as well as alloantigen-stimulated proliferation of murine and human lymphocytes. Four other peptides, representing different regions of virus proteins, were inactive. These results suggest that the immunosuppressive portion of retroviral transmembrane envelope proteins may reside, at least in part, in a-conserved sequence represented by the CKS-17 peptide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cianciolo, G J -- Copeland, T D -- Oroszlan, S -- Snyderman, R -- P01-CA29589-02/CA/NCI NIH HHS/ -- R23-CA34671-02/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Oct 25;230(4724):453-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2996136" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell Line ; Deltaretrovirus/genetics ; Humans ; Leukemia Virus, Feline/genetics ; Leukemia Virus, Murine/genetics ; Lymphocyte Activation/*drug effects ; Lymphocyte Culture Test, Mixed ; Lymphocytes/drug effects ; Mice ; Mice, Inbred BALB C ; Peptides/*pharmacology ; Retroviridae/*genetics ; Spleen/cytology ; Viral Envelope Proteins/genetics/*pharmacology
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    Cell-specific expression of the rat insulin gene: evidence for role of two distinct 5' flanking elements (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-11-22
    Description: The 5' flanking DNA of the rat insulin I gene contains sequences controlling cell-specific expression. Analysis of this region by replacement of specific portions with nondiscriminatory control elements from viral systems shows that a transcriptional enhancer is located in the distal portion of the 5' flanking DNA; its position has been mapped by deletion analysis. Additional experiments suggest that another distinct regulatory element is located more proximal to the transcription start site. The activity of both elements is restricted to pancreatic B cells. The combinatorial effect of multiple control elements could explain the cell-specific expression of insulin genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Edlund, T -- Walker, M D -- Barr, P J -- Rutter, W J -- AM 21344/AM/NIADDK NIH HHS/ -- GM 28520/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Nov 22;230(4728):912-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3904002" target="_blank"〉PubMed〈/a〉
    Keywords: Acetyltransferases/genetics ; Animals ; Cell Differentiation ; Chloramphenicol O-Acetyltransferase ; Chromosome Mapping ; Enhancer Elements, Genetic ; *Gene Expression Regulation ; Genetic Vectors ; Insulin/*genetics ; Islets of Langerhans/*physiology ; Plasmids ; Promoter Regions, Genetic ; Rats ; Transcription, Genetic
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    Wounding and its role in RSV-mediated tumor formation (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-11-08
    Description: Tumors induced in chickens by Rous sarcoma virus remain localized at the site of injection even though the animals become viremic. Tumors have now been shown to be inducible at other sites if a wound is inflicted or if the tissue is injured by administration of tumor promoters. These findings indicate that local wounding plays a role in the spread of tumorigenicity of Rous sarcoma virus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dolberg, D S -- Hollingsworth, R -- Hertle, M -- Bissell, M J -- 1 F32 CA 07068-01A1/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Nov 8;230(4726):676-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2996144" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avian Sarcoma Viruses ; Carcinogens/pharmacology ; Chick Embryo ; Chickens ; Flow Cytometry ; Humans ; Neoplasm Transplantation ; Neoplasms/complications ; Sarcoma, Avian/*etiology/microbiology ; Wounds and Injuries/complications/*veterinary
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    Transovarial transmission of murine typhus rickettsiae in Xenopsylla cheopis fleas (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-02-01
    Description: It has been generally accepted that infected fleas do not pass on Rickettsia mooseri, or indeed any other known pathogen, to their progeny. It is reported here that such transovarial transmission does occur in laboratory-infected Xenopsylla cheopis fleas. By means of the direct fluorescent antibody test, Rickettsia mooseri was observed in cells of the hemolymph of infected fleas. As many as 11 percent of the adults and 2.9 percent of the larvae of the generation reared therefrom, had demonstrable rickettsiae. Moreover, batches of the F1 fleas were capable of transmitting the infection to more than 18 percent of the rats they infested. The data support the contention that Xenopsylla cheopis fleas play an important role in the maintenance of murine typhus in rats in nature.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Farhang-Azad, A -- Traub, R -- Baqar, S -- AI-04242/AI/NIAID NIH HHS/ -- AI-17828/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1985 Feb 1;227(4686):543-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3966162" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; Hemolymph/microbiology ; Insect Vectors/*physiology ; Male ; Ovary/microbiology ; Rats ; Rickettsia/*physiology ; Siphonaptera/*microbiology ; Typhus, Endemic Flea-Borne/microbiology/*transmission
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    Regulation of extravascular coagulation by microvascular permeability (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-03-01
    Description: Extravascular coagulation is a prominent feature of such important pathological processes as cellular immunity and neoplasia and has been thought to result from procoagulants associated with the inflammatory or tumor cells peculiar to these entities. It was found that increased microvascular permeability alone is sufficient to induce equivalent extravascular coagulation in several normal tissues. The results indicate that saturating levels of procoagulant are present even in normal tissues and that microvascular permeability is a rate-limiting step in extravascular coagulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dvorak, H F -- Senger, D R -- Dvorak, A M -- Harvey, V S -- McDonagh, J -- CA 28834/CA/NCI NIH HHS/ -- CA-28471/CA/NCI NIH HHS/ -- HL-29511/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1985 Mar 1;227(4690):1059-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3975602" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Blood Coagulation ; Bradykinin/pharmacology ; *Capillary Permeability/drug effects ; Fibrin/physiology ; Fibrinogen/pharmacology ; Guinea Pigs ; Histamine/pharmacology ; Neoplasms/physiopathology ; Skin/blood supply/drug effects ; Skin Physiological Phenomena
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    Bond order and charge localization in nucleoside phosphorothioates (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-03
    Description: In the recent literature on nucleoside phosphorothioate anions the structural formulas show a double bond between phosphorus and sulfur and a single bond between phosphorus and oxygen with a negative charge localized on oxygen. However, a review of physical data on these compounds shows the reverse to be the case; that is, in phosphorothioate anions the P-S bond is a single bond with a negative charge localized on sulfur, while the P-O bond order for exocyclic and nonbridging oxygens is greater than 1, approaching 2 in O-alkyl phosphorothioate monoanions and O,O-dialkyl phosphorothioates. The P-O bond orders in phosphorothioate dianions and trianions approach 1 1/2 and 1 1/3, respectively, owing to delocalization of negative charge among two or three oxygens. These conclusions are based on bond lengths obtained from x-ray crystallographic data and electron diffraction, the magnitudes of the effects of 18O on the 31P-nuclear magnetic resonance chemical shifts of phosphorus in nucleoside [18O]phosphorothioates, the pH-dependence of 17O-NMR chemical shifts in [17O]phosphate and [17O]thiophosphate, the vibrational spectra of thiophosphate di- and trianions, and the pKa (dissociation constant) values for phosphoric and thiophosphoric acids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frey, P A -- Sammons, R D -- GM30480/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 May 3;228(4699):541-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2984773" target="_blank"〉PubMed〈/a〉
    Keywords: Chemical Phenomena ; Chemistry ; Chemistry, Physical ; Cyclic AMP/metabolism ; Magnetic Resonance Spectroscopy ; Phosphates/metabolism ; Phosphoric Acids/metabolism ; Physicochemical Phenomena ; *Thionucleotides/metabolism
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    Gene expression in mice after high efficiency retroviral-mediated gene transfer (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-12-20
    Description: A retroviral expression vector (N2) containing the selectable gene, neoR, has been used to determine the optimal conditions for infecting murine hematopoietic progenitor cells at high efficiency. After infected bone marrow cells were introduced into lethally irradiated mice, the presence, stability, and expression of the vector DNA sequences were analyzed either in individual spleen foci 10 days later or in the blood, bone marrow, and spleens of mice 4 months later. When bone marrow cells were cultured in medium containing virus with titers of more than 10(6) colony-forming units per milliliter in the presence of purified murine interleukin-3, more than 85 percent of the resulting foci contained vector DNA. This proviral vector DNA was intact. Efficient expression of the neoR gene was demonstrated in most of the DNA-positive foci examined. The spleens of reconstituted animals (over a long term) contained intact "vector DNA" and the blood and bone marrow expressed the neoR gene in some animals. Thus, a retroviral vector can be used to introduce intact exogenous DNA sequences into hematopoietic stem cells with high efficiency and with substantial expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eglitis, M A -- Kantoff, P -- Gilboa, E -- Anderson, W F -- New York, N.Y. -- Science. 1985 Dec 20;230(4732):1395-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2999985" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Bone Marrow/microbiology ; Cells, Cultured ; DNA Transposable Elements ; DNA, Viral/genetics ; *Genes, Viral ; *Genetic Vectors ; Mice ; Moloney murine leukemia virus/*genetics ; Spleen/microbiology ; *Transcription, Genetic
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    Vitamin E reversal of the effect of extracellular calcium on chemically induced toxicity in hepatocytes (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-02-15
    Description: Isolated rat hepatocytes were incubated in the presence or absence of extracellular calcium and alpha-tocopherol succinate with three different toxic chemicals; namely, adriamycin in combination with 1,3-bis(2-chloroethyl)-1-nitrosourea, ethyl methanesulfonate, and the calcium ionophore A23187. In the absence of extracellular calcium these three compounds were far more toxic to the cells than in its presence. The addition of vitamin E to calcium-free medium, however, protected hepatocytes against toxic injury, whereas cells incubated in medium containing calcium were not protected. Hepatocyte viability during each toxic insult correlated well with the cellular alpha-tocopherol content but not with the presence or absence of extracellular calcium. These results suggest that cellular alpha-tocopherol maintains the viability of the cell during a toxic insult and that the presence or absence of vitamin E in the incubation medium probably explains the conflicting reports on the role of extracellular calcium in toxic cell death.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fariss, M W -- Pascoe, G A -- Reed, D J -- ES01978/ES/NIEHS NIH HHS/ -- ES07060/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1985 Feb 15;227(4688):751-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3918345" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcimycin/toxicity ; Calcium/*physiology ; Carmustine/toxicity ; Cell Survival/*drug effects ; Cells, Cultured ; Doxorubicin/toxicity ; Ethyl Methanesulfonate/toxicity ; Liver/cytology/*drug effects ; Male ; Rats ; Rats, Inbred Strains ; Vitamin E/*physiology
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    Two gustatory systems: facial and vagal gustatory nuclei have different brainstem connections (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-02-15
    Description: The gustatory sense in catfish consists of two dissociable components, a facial nerve system used for food selection and a vagal nerve system involved in swallowing. Neural tracing experiments demonstrate that the primary sensory nucleus for the facial gustatory system is connected to the reticular formation and trigeminal nuclei. In contrast, the primary sensory nucleus for the vagal gustatory system is connected to the motoneurons that mediate swallowing. These results provide anatomical evidence for parallel gustatory systems within the vertebrate central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Finger, T E -- Morita, Y -- KO-4 NS-00772/NS/NINDS NIH HHS/ -- R0-1 NS-15258/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 Feb 15;227(4688):776-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3969566" target="_blank"〉PubMed〈/a〉
    Keywords: Afferent Pathways/*anatomy & histology ; Animals ; Deglutition ; Fishes/*anatomy & histology ; Taste/*physiology ; Trigeminal Nerve/anatomy & histology ; Vagus Nerve/anatomy & histology
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    Interaction of calcitonin and calcitonin gene-related peptide at receptor sites in target tissues (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-03-15
    Description: Discrete receptor sites for calcitonin (CT) and calcitonin gene-related peptide (CGRP) were found in the nervous system and in peripheral tissues. Each peptide was capable of cross-reacting with the specific receptor of the other. In contrast to CT receptors, CGRP receptors were not linked to adenylate cyclase. However, CGRP could stimulate adenylate cyclase in CT target tissues apparently by interacting with CT receptors. The relative abilities of CGRP and mammalian CT to inhibit CT binding suggest that CGRP could serve as an endogenous ligand for CT receptors in the central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goltzman, D -- Mitchell, J -- New York, N.Y. -- Science. 1985 Mar 15;227(4692):1343-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2983422" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclases/metabolism ; Adrenal Glands/metabolism ; Animals ; Bone and Bones/metabolism ; Brain/metabolism ; Calcitonin/*metabolism ; Calcitonin Gene-Related Peptide ; Kidney/metabolism ; Male ; Nerve Tissue Proteins/*metabolism ; Pituitary Gland/metabolism ; Rats ; Rats, Inbred Strains ; Receptors, Calcitonin ; Receptors, Cell Surface/*metabolism ; Spinal Cord/metabolism
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    Genes-in-pieces revisited (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gilbert, W -- New York, N.Y. -- Science. 1985 May 17;228(4701):823-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4001923" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Base Sequence ; *Biological Evolution ; *Genes ; Glyceraldehyde-3-Phosphate Dehydrogenases/genetics ; Humans ; Pyruvate Kinase/genetics ; *RNA Splicing ; Receptors, LDL/genetics ; Triose-Phosphate Isomerase/genetics ; Zea mays/genetics
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    Interleukin-1 stimulation of astroglial proliferation after brain injury (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-04-26
    Description: The interleukins, which have a regulatory role in immune function, may also mediate inflammation associated with injury to the brain. In experiments to determine the effect of these peptide hormones on glial cell proliferation in culture, interleukin-1 was a potent mitogen for astroglia but had no effect on oligodendroglia. Interleukin-2 did not alter the growth of either type of glial cell. Activity similar to that of interleukin-1 was detected in brains of adult rats 10 days after the brains had been injured. These findings suggest that interleukin-1, released by inflammatory cells, may promote the formation of scars by astroglia in the damaged mammalian brain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Giulian, D -- Lachman, L B -- EY04915/EY/NEI NIH HHS/ -- R01CA38043/CA/NCI NIH HHS/ -- RR5511/RR/NCRR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1985 Apr 26;228(4698):497-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3872478" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Astrocytes/*pathology ; Brain Injuries/*pathology ; Cells, Cultured ; Chromatography, High Pressure Liquid/methods ; Chromatography, Ion Exchange/methods ; Interleukin-1/isolation & purification/*physiology ; Interleukin-2/physiology ; Isoelectric Focusing ; *Mitogens ; Oligodendroglia/pathology ; Rats
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    Early biochemical effects of an organic mercury fungicide on infants: "dose makes the poison" (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-02-08
    Description: Phenylmercury absorbed through the skin from contaminated diapers affected urinary excretion in infants in Buenos Aires. The effects were reversible and quantitatively related to the concentration of urinary mercury. Excretion of gamma-glutamyl transpeptidase, an enzyme in the brush borders of renal tubular cells, increased in a dose-dependent manner when mercury excretion exceeded a "threshold" value. Urine volume also increased but at a higher threshold with respect to mercury. The results support the threshold concept of the systemic toxicity of metals. gamma-Glutamyl transpeptidase is a useful and sensitive marker for preclinical effects of toxic metals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gotelli, C A -- Astolfi, E -- Cox, C -- Cernichiari, E -- Clarkson, T W -- ES01247/ES/NIEHS NIH HHS/ -- ES01248/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1985 Feb 8;227(4687):638-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2857500" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Argentina ; Creatinine/urine ; Dose-Response Relationship, Drug ; Fungicides, Industrial/*pharmacology ; Humans ; Infant ; Mercury/urine ; Mercury Poisoning/etiology ; Phenylmercury Compounds/*pharmacology ; Proteinuria/metabolism ; Urodynamics/drug effects ; gamma-Glutamyltransferase/urine
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    Retroviral vector-mediated gene transfer into human hematopoietic progenitor cells (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-11-29
    Description: The transfer of the human gene for hypoxanthine phosphoribosyltransferase (HPRT) into human bone marrow cells was accomplished by use of a retroviral vector. The cells were infected in vitro with a replication-incompetent murine retroviral vector that carried and expressed a mutant HPRT complementary DNA. The infected cells were superinfected with a helper virus and maintained in long-term culture. The production of progeny HPRT virus by the bone marrow cells was demonstrated with a colony formation assay on cultured HPRT-deficient, ouabain-resistant murine fibroblasts. Hematopoietic progenitor cells able to form colonies of granulocytes or macrophages (or both) in semisolid medium in the presence of colony stimulating factor were present in the nonadherent cell population. Colony forming units cloned in agar and subsequently cultured in liquid medium produced progeny HPRT virus, indicating infection of this class of hematopoietic progenitor cell.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gruber, H E -- Finley, K D -- Hershberg, R M -- Katzman, S S -- Laikind, P K -- Seegmiller, J E -- Friedmann, T -- Yee, J K -- Jolly, D J -- AM 13622/AM/NIADDK NIH HHS/ -- GM 28223/GM/NIGMS NIH HHS/ -- HD20034/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1985 Nov 29;230(4729):1057-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3864246" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Gene Expression Regulation ; *Genetic Engineering ; Genetic Vectors ; Hematopoietic Stem Cells/*physiology ; Humans ; Hypoxanthine Phosphoribosyltransferase/*genetics ; Mice ; Retroviridae/*genetics ; Transfection
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  • 78
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    Neurobiological bases of rhythmic motor acts in vertebrates (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-04-12
    Description: The general principles governing the nervous control of innate motor acts in vertebrates are discussed. Particular consideration is given to the control of locomotion in both mammals and lower vertebrates. One in vitro model of the lamprey central nervous system has been developed. It can be maintained in vitro for several days and the motor pattern underlying locomotion can be elicited in isolated sections of the spinal cord. These findings now allow a detailed analysis of the underlying neural mechanisms. The hypothesis that different parts of the network controlling locomotion can be used in a variety of other motor acts, including learned ones, is reviewed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grillner, S -- New York, N.Y. -- Science. 1985 Apr 12;228(4696):143-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3975635" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Birds/physiology ; Brain Stem/physiology ; Cats ; Cerebellum/physiology ; Crustacea/physiology ; Fishes ; Lampreys/physiology ; *Locomotion ; Mechanoreceptors/physiology ; *Movement ; *Nervous System Physiological Phenomena ; Spinal Cord/physiology
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  • 79
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    Atrotoxin: a specific agonist for calcium currents in heart (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-07-12
    Description: A specific label for voltage-dependent calcium channels is essential for the isolation and purification of the membrane protein that constitutes the calcium channel and for a better understanding of its function. A fraction of Crotalus atrox that increases voltage-dependent calcium currents in single, dispersed guinea pig ventricular cells was isolated. In the doses used, neither sodium nor potassium currents were changed. The fraction was active in the absence of detectable phospholipase or protease activity, and the active component, designated atrotoxin, produced its effect rapidly and reversibly. The effect was produced by extracellular but not intracellular application of the agent. The increase in Ca2+ current was blocked by the Ca2+ channel blockers cobalt and nitrendipine. The active fraction completely blocked specific [3H]nitrendipine binding to guinea pig ventricular membrane preparations. The inhibition of nitrendipine binding by atrotoxin was apparently via an allosteric mechanism. Thus atrotoxin was shown to bind to the Ca2+ channel and to act as a specific Ca2+ channel agonist.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hamilton, S L -- Yatani, A -- Hawkes, M J -- Redding, K -- Brown, A M -- 1R01 HL3293S/HL/NHLBI NIH HHS/ -- 1R01-HL33662-01/HL/NHLBI NIH HHS/ -- 5R01-HL25145-05/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1985 Jul 12;229(4709):182-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3160111" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials/drug effects ; Animals ; Calcium/*metabolism ; Cell Membrane/metabolism ; Crotalid Venoms/*pharmacology ; Dose-Response Relationship, Drug ; Guinea Pigs ; In Vitro Techniques ; Molecular Weight ; Myocardium/*metabolism ; Nifedipine/analogs & derivatives/metabolism ; Nitrendipine ; Potassium/metabolism ; Rats ; Sodium/metabolism
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  • 80
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    Behavioral facilitation of reproduction in sexual and parthenogenetic Drosophila (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-01-04
    Description: In a normal bisexual laboratory strain of Drosophila mercatorum, females housed with either fertile or sterile males lay more eggs than do females housed in pairs or as isolates. Females of a derived parthenogenetic strain have suffered genetic loss of this behavioral facilitation of egg production, a loss comparable to the loss of sexual receptivity. Despite these losses there has been a large increase in fecundity in the parthenogenetic strain. These findings are compared with those in a parthenogenetic lizard.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crews, D -- Teramoto, L T -- Carson, H L -- New York, N.Y. -- Science. 1985 Jan 4;227(4682):77-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3964961" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Drosophila/*physiology ; Female ; Male ; Neurosecretory Systems/physiology ; *Parthenogenesis ; Reproduction ; Sexual Behavior, Animal/*physiology
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  • 81
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    Vaccinia virus recombinant expressing herpes simplex virus type 1 glycoprotein D prevents latent herpes in mice (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-10
    Description: In humans, herpes simplex virus causes a primary infection and then often a latent ganglionic infection that persists for life. Because these latent infections can recur periodically, vaccines are needed that can protect against both primary and latent herpes simplex infections. Infectious vaccinia virus recombinants that contain the herpes simplex virus type 1 (HSV-1) glycoprotein D gene under control of defined early or late vaccinia virus promoters were constructed. Tissue culture cells infected with these recombinant viruses synthesized a glycosylated protein that had the same mass (60,000 daltons) as the glycoprotein D produced by HSV-1. Immunization of mice with one of these recombinant viruses by intradermal, subcutaneous, or intraperitoneal routes resulted in the production of antibodies that neutralized HSV-1 and protected the mice against subsequent lethal challenge with HSV-1 or HSV-2. Immunization with the recombinant virus also protected the majority of the mice against the development of a latent HSV-1 infection of the trigeminal ganglia. This is the first demonstration that a genetically engineered vaccine can prevent the development of latency.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cremer, K J -- Mackett, M -- Wohlenberg, C -- Notkins, A L -- Moss, B -- New York, N.Y. -- Science. 1985 May 10;228(4700):737-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2986288" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Viral/immunology ; *Genetic Engineering ; Herpes Simplex/immunology/*prevention & control ; Humans ; Mice ; Mice, Inbred BALB C ; Simplexvirus/genetics/immunology ; Vaccines ; Vaccinia virus/*genetics ; *Viral Envelope Proteins ; Viral Proteins/*genetics/immunology
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  • 82
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    A new class of steroids inhibits angiogenesis in the presence of heparin or a heparin fragment (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-12-20
    Description: Steroids that lack glucocorticoid or mineralocorticoid activity were found to inhibit angiogenesis in the presence of heparin or specific heparin fragments. This newly discovered steroid function appears to be governed by distinct structural configurations of the pregnane nucleus. These compounds are here named angiostatic steroids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crum, R -- Szabo, S -- Folkman, J -- R01-CA37395/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Dec 20;230(4732):1375-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2416056" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Vessels/drug effects/*embryology ; Chick Embryo ; Drug Interactions ; Glucocorticoids/pharmacology ; Heparin/analogs & derivatives/*pharmacology ; Mineralocorticoids/pharmacology ; Neovascularization, Pathologic/*physiopathology ; Steroids/*pharmacology ; Structure-Activity Relationship
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  • 83
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    Gene for alpha-chain of human T-cell receptor: location on chromosome 14 region involved in T-cell neoplasms (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-03-01
    Description: A human complementary DNA clone specific for the alpha-chain of the T-cell receptor and a panel of rodent X human somatic cell hybrids were used to map the alpha-chain gene to human chromosome 14 in a region proximal to the immunoglobulin heavy chain locus. Analysis by means of in situ hybridization of human metaphase chromosomes served to further localize the alpha-chain gene to region 14q11q12, which is consistently involved in translocations and inversions detectable in human T-cell leukemias and lymphomas. Thus, the locus for the alpha-chain T-cell receptor may participate in oncogene activation in T-cell tumors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Croce, C M -- Isobe, M -- Palumbo, A -- Puck, J -- Ming, J -- Tweardy, D -- Erikson, J -- Davis, M -- Rovera, G -- CA 10 815/CA/NCI NIH HHS/ -- CA16685/CA/NCI NIH HHS/ -- CA215875/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Mar 1;227(4690):1044-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3919442" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Chromosome Mapping ; Chromosomes, Human, 13-15 ; DNA/genetics ; Genes ; Humans ; Hybrid Cells/metabolism ; Immunoglobulin Heavy Chains/*genetics ; Immunoglobulin alpha-Chains/*genetics ; Leukemia/genetics ; Lymphoma/genetics ; Mice ; Nucleic Acid Hybridization ; Receptors, Antigen, T-Cell/*genetics ; T-Lymphocytes ; Translocation, Genetic
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  • 84
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    Dominance in physiological phenotypes and fitness at an enzyme locus (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-07-05
    Description: Aminopeptidase-I allozymes, which are products of the Lap locus in the marine mussel, Mytilus edulis, differ in their catalytic efficiencies. These biochemical differences result in genotype-specific rates of change in the free amino acid pool, that is, cell volume regulation, when mussels are subjected to changes in salinity. A high degree of dominance was found among genotypes for these biochemical and physiological phenotypes. Selection models that incorporate dominance adequately predict observed genotypic properties at the Lap locus among natural populations that exhibit clinical allele frequency. This suggests that a high degree of dominance for fitness must also occur at this locus in natural populations. These results provide additional evidence that the maintenance of an allele frequency cline is operating by natural selection at the Lap locus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hilbish, T J -- Koehn, R K -- GM 21131/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Jul 5;229(4708):52-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4012310" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Aminopeptidases/*genetics ; Animals ; Bivalvia/*physiology ; Catalysis ; Genes, Dominant ; Genetics, Population ; Heterozygote ; Phenotype ; *Saccharomyces cerevisiae Proteins ; Selection, Genetic ; Water-Electrolyte Balance
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  • 85
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    Gene therapy guidelines revised (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Culliton, B J -- New York, N.Y. -- Science. 1985 May 3;228(4699):561-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3856951" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Deaminase/deficiency ; Advisory Committees ; Animal Experimentation ; Animals ; Dogs ; Ethics Committees, Research ; Federal Government ; Genetic Diseases, Inborn ; *Genetic Engineering ; *Government Regulation ; Humans ; Mice ; National Institutes of Health (U.S.) ; United States ; Recombinant DNA Advisory Committee (RAC), has revised its draft guidelines, ; published in the 22 January 1985 Federal Register, for researchers submitting ; protocols for human gene therapy experiments. The major revisions in the "Points ; to Consider" are the elimination of a required response in the protocol to ; complex social and ethical questions and a greater flexibility in requirements ; for animal testing prior to human experimentation. Other modifications include ; provisions for public review of protocols, a requirement of patient agreement to ; long term follow-up and autopsy, and the limiting of review to only somatic cell ; therapy for the present. The stages of protocol review will involve local ethics ; and biosafety committees, then the Working Group, the full RAC, and finally the ; director of NIH.
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  • 86
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    The cellular basis of hearing: the biophysics of hair cells (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-11-15
    Description: A crucial event in the hearing process is the transduction of mechanical stimuli into electrical signals by hair cells, the sensory receptors of the internal ear. Stimulation results in the rapid opening of ionic channels in the mechanically sensitive organelles of these cells, their hair bundles. These transduction channels, which are nonselectively permeable, are directly excited by hair-bundle displacement. Hair cells are selectively responsive to particular frequencies of stimulation, both due to the mechanical properties of their hair bundles and because of an ensemble of ionic channels that constitute an electrical resonator.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hudspeth, A J -- NS13154/NS/NINDS NIH HHS/ -- NS20429/NS/NINDS NIH HHS/ -- NS22389/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 Nov 15;230(4727):745-52.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2414845" target="_blank"〉PubMed〈/a〉
    Keywords: Acoustic Stimulation ; Alligators and Crocodiles ; Animals ; Basilar Membrane/physiology ; Calcium/physiology ; Cats ; Chickens ; Chiroptera ; Cochlea/physiology ; Hair Cells, Auditory/*physiology/ultrastructure ; Hearing/*physiology ; Humans ; Ion Channels/physiology ; Lizards ; Mammals ; Microscopy, Electron ; Microscopy, Electron, Scanning ; Organ of Corti/physiology ; Potassium/physiology ; Rana catesbeiana ; Saccule and Utricle/physiology ; Stapes/physiology ; Turtles
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  • 87
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    Multiple organ carcinogenicity of 1,3-butadiene in B6C3F1 mice after 60 weeks of inhalation exposure (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-02-01
    Description: Groups of 50 male and 50 female B6C3F1 mice were exposed 6 hours per day, 5 days per week, for 60 to 61 weeks to air containing 0, 625, or 1250 parts per million 1,3-butadiene. These concentrations are somewhat below and slightly above the Occupational Safety and Health Administration standard of 1000 parts per million for butadiene. The study was designed for 104-week exposures but had to be ended early due to cancer-related mortality in both sexes at both exposure concentrations. There were early induction and significantly increased incidences of hemangiosarcomas of the heart, malignant lymphomas, alveolar-bronchiolar neoplasms, squamous cell neoplasms of the forestomach in males and females and acinar cell carcinomas of the mammary gland, granulosa cell neoplasms of the ovary, and hepatocellular neoplasms in females. Current workplace standards for exposure to butadiene should be reexamined in view of these findings.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huff, J E -- Melnick, R L -- Solleveld, H A -- Haseman, J K -- Powers, M -- Miller, R A -- New York, N.Y. -- Science. 1985 Feb 1;227(4686):548-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3966163" target="_blank"〉PubMed〈/a〉
    Keywords: Air Pollutants, Occupational/*toxicity ; Animals ; Body Weight/drug effects ; Brain Neoplasms/chemically induced ; Butadienes/*toxicity ; Female ; Heart Neoplasms/chemically induced ; Inflammation ; Liver Neoplasms/chemically induced ; Lung Neoplasms/chemically induced ; Lymphoma/chemically induced ; Male ; Mammary Glands, Animal ; Mice ; Mice, Inbred Strains ; Neoplasms/*chemically induced ; Nose Diseases/chemically induced ; Ovarian Neoplasms/chemically induced ; Stomach Neoplasms/chemically induced
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  • 88
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    Synthesis and evaluation of a prototypal artificial red cell (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-12-06
    Description: A new process allows microencapsulation of purified human hemoglobin and 2,3-diphosphoglycerate to form neohemocytes. The microcapsule membrane is composed of phospholipids and cholesterol. Neohemocytes are substantially smaller than erythrocytes, contain 15.1 grams per decaliter of hemoglobin, and have a P50 value (the partial pressure of oxygen at which the hemoglobin is half-saturated) of 24.0 torr. All rats given 50-percent exchange transfusions survived with only limited evidence of reversible toxicity. Normal serum glutamate-pyruvate-transaminase values at 1, 7, and 30 days after transfusion were consistent with minimal hepatotoxicity. The concentration of blood urea-nitrogen was elevated by 35 percent after 1 day but returned to normal by day 7. However, histopathology revealed normal kidneys on day 1 as well as on days 7 and 30. Neohemocytes cleared from the circulation of transfused rats with an apparent half-life of 5.8 hours.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hunt, C A -- Burnette, R R -- MacGregor, R D -- Strubbe, A E -- Lau, D T -- Taylor, N -- Kiwada, H -- R01-GM-24612/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Dec 6;230(4730):1165-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4071041" target="_blank"〉PubMed〈/a〉
    Keywords: Alanine Transaminase/blood ; Animals ; Aspartate Aminotransferases/blood ; Bilirubin/blood ; Blood Substitutes/adverse effects/*metabolism ; Blood Transfusion ; Blood Urea Nitrogen ; Creatinine/blood ; Disseminated Intravascular Coagulation/etiology ; Hematocrit ; Hemoglobins/metabolism ; Humans ; Microscopy, Electron ; Oxygen/metabolism ; Rats
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  • 89
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    Coupling of action potential activity between unmyelinated fibers in the peripheral nerve of monkey (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-01-11
    Description: Bidirectional coupling of action potential activity occurs between unmyelinated fibers in the normal peripheral nerve of monkey. The site of coupling is near the cutaneous nociceptive receptor associated with one of the fibers. This coupling could be due to an electrical synapse and could provide the basis for the flare associated with the axon reflex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meyer, R A -- Raja, S N -- Campbell, J N -- NS-00519/NS/NINDS NIH HHS/ -- NS-14447/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 Jan 11;227(4683):184-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3966152" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Electric Stimulation ; Macaca fascicularis ; Nerve Fibers/physiology ; Peripheral Nerves/*physiology ; Sensory Receptor Cells/physiology ; Skin/injuries
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  • 90
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    Immunoglobulin heavy-chain enhancer requires one or more tissue-specific factors (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-01-18
    Description: Enhancer sequences are regulatory regions that greatly increase transcription of certain eukaryotic genes. An immunoglobulin heavy-chain variable gene segment is moved from a region lacking enhancer activity to a position adjacent to the known heavy-chain enhancer early in B-cell maturation. In lymphoid cells, the heavy-chain and SV40 enhancers bind a common factor essential for enhancer function. In contrast, fibroblast cells contain a functionally distinct factor that is used by the SV40 but not by the heavy-chain enhancer. The existence of different factors in these cells may explain the previously described lymphoid cell specificity of the heavy-chain enhancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mercola, M -- Goverman, J -- Mirell, C -- Calame, K -- GM29361/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 Jan 18;227(4684):266-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3917575" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibody Formation ; B-Lymphocytes/immunology ; Base Sequence ; Cell Line ; *Enhancer Elements, Genetic ; Fibroblasts/immunology ; *Genes, Regulator ; Humans ; Immunoglobulin Constant Regions/genetics ; Immunoglobulin Heavy Chains/*genetics ; Immunoglobulin Variable Region/genetics ; Mice ; Transcription, Genetic
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  • 91
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    Rescue of the Drosophila phototransduction mutation trp by germline transformation (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-11-29
    Description: Phototransduction is the process by which light-stimulated photoreceptor cells of the visual system send electrical signals to the nervous system. Many of the steps that follow the initial event in phototransduction, absorption of light by rhodopsin, are ill-defined. The fruitfly, Drosophila melanogaster, provides a means to dissect phototransduction genetically. Mutations such as transient receptor potential (trp) affect intermediate steps in phototransduction. In order to facilitate molecular studies of phototransduction, the trp gene was isolated and its identity was confirmed by complementing the mutant trpCM allele of the trp gene by P-element mediated germline transformation of a 7.1-kilobase DNA fragment. Expression of the trp gene begins late in pupal development and appears to be limited to the eyes and ocelli.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Montell, C -- Jones, K -- Hafen, E -- Rubin, G -- New York, N.Y. -- Science. 1985 Nov 29;230(4729):1040-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3933112" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA/genetics ; Drosophila melanogaster/*genetics/physiology ; Gene Expression Regulation ; Genes ; Mutation ; Ocular Physiological Phenomena ; RNA, Messenger/genetics ; *Vision, Ocular
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 92
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    Choline acetyltransferase activity in striatum of neonatal rats increased by nerve growth factor (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-07-19
    Description: Some neurodegenerative disorders may be caused by abnormal synthesis or utilization of trophic molecules required to support neuronal survival. A test of this hypothesis requires that trophic agents specific for the affected neurons be identified. Cholinergic neurons in the corpus striatum of neonatal rats were found to respond to intracerebroventricular administration of nerve growth factor with prominent, dose-dependent, selective increases in choline acetyltransferase activity. Cholinergic neurons in the basal forebrain also respond to nerve growth factor in this way. These actions of nerve growth factor may indicate its involvement in the normal function of forebrain cholinergic neurons as well as in neurodegenerative disorders involving such cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mobley, W C -- Rutkowski, J L -- Tennekoon, G I -- Buchanan, K -- Johnston, M V -- ES07094/ES/NIEHS NIH HHS/ -- NS00603/NS/NINDS NIH HHS/ -- NS17642/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 Jul 19;229(4710):284-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2861660" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/physiology ; Alzheimer Disease/metabolism ; Animals ; Animals, Newborn/metabolism ; Brain/drug effects/enzymology ; Choline O-Acetyltransferase/*metabolism ; Corpus Striatum/cytology/drug effects/*enzymology ; Dose-Response Relationship, Drug ; Glutamate Decarboxylase/metabolism ; Humans ; Huntington Disease/metabolism ; Nerve Growth Factors/*pharmacology/physiology ; Neurons/enzymology/physiology ; Rats ; Rats, Inbred Strains ; Tyrosine 3-Monooxygenase/metabolism
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 93
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    Ca2+ and Ca2+-activated K+ currents in mammalian gastric smooth muscle cells (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-07-19
    Description: Inward movement of calcium through voltage-dependent channels in muscle is thought to initiate the action potential and trigger contraction. Calcium-activated potassium channels carry large outward potassium currents that may be responsible for membrane repolarization. Calcium and calcium-activated potassium currents were identified in enzymatically isolated mammalian gastric myocytes. These currents were blocked by cadmium and nifedipine but were not substantially affected by diltiazem or D600. No evidence for a tetrodotoxin-sensitive sodium current or an inwardly rectifying potassium current was found.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mitra, R -- Morad, M -- 5-T32-GM-07170/GM/NIGMS NIH HHS/ -- R01-16152/PHS HHS/ -- New York, N.Y. -- Science. 1985 Jul 19;229(4710):269-72.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2409600" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/pharmacology ; Action Potentials/drug effects ; Animals ; Cadmium/pharmacology ; Calcium/*metabolism/physiology ; Diltiazem/pharmacology ; Gallopamil/pharmacology ; Guinea Pigs ; Ion Channels/drug effects/*physiology ; Muscle, Smooth/cytology/*physiology ; Nifedipine/pharmacology ; Potassium/*metabolism/physiology ; Rabbits ; Stomach/cytology/*physiology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 94
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    Selective attention gates visual processing in the extrastriate cortex (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-08-23
    Description: Single cells were recorded in the visual cortex of monkeys trained to attend to stimuli at one location in the visual field and ignore stimuli at another. When both locations were within the receptive field of a cell in prestriate area V4 or the inferior temporal cortex, the response to the unattended stimulus was dramatically reduced. Cells in the striate cortex were unaffected by attention. The filtering of irrelevant information from the receptive fields of extrastriate neurons may underlie the ability to identify and remember the properties of a particular object out of the many that may be represented on the retina.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moran, J -- Desimone, R -- New York, N.Y. -- Science. 1985 Aug 23;229(4715):782-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4023713" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Attention/physiology ; Brain Mapping ; Macaca mulatta ; Visual Cortex/*physiology ; *Visual Perception
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 95
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    Parkinson's disease: an environmental cause? (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-07-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1985 Jul 19;229(4710):257-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3925554" target="_blank"〉PubMed〈/a〉
    Keywords: 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine ; Animals ; Haplorhini ; Humans ; Mice ; Parkinson Disease/*etiology ; Parkinson Disease, Secondary/chemically induced ; Pesticides/adverse effects ; Pyridines/adverse effects/metabolism ; Quebec ; Rats ; Substantia Nigra/drug effects
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 96
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    Why do inbred mice evolve so quickly? (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-06-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1985 Jun 7;228(4704):1187.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4039848" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Mice ; Mice, Inbred Strains/*genetics ; Species Specificity ; Time Factors
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 97
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    Molecular clocks scrutinized (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-05-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1985 May 3;228(4699):571.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3983640" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Biological Clocks ; DNA/metabolism ; Humans ; Mice ; Rats
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 98
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    Tooth enamel tells a complex story (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1985 May 10;228(4700):707.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3992241" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Dental Enamel/*anatomy & histology ; Gorilla gorilla ; Hominidae ; Humans ; Pan troglodytes
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 99
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    Matrix-driven translocation of cells and nonliving particles (1985)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1985-05-17
    Description: Cells of metazoan organisms produce and react to complex macromolecular microenvironments known as extracellular matrices. Assembly in vitro of native, compositionally nonuniform collagen-fibronectin matrices caused translocation of certain types of cells or polystyrene-latex beads from regions lacking fibronectin into regions containing it. The translocation process was not due to diffusion, convection, or electrostatic distribution effects, but may depend on nonequilibrium phenomena at the interface of contiguous collagen matrices formed in the presence and absence of fibronectin or particles. Extracellular matrix formation alone was sufficient to drive translocation by a biophysical process that may play a role in cellular migration during embryogenesis, as well as in other types of tissue reorganization such as inflammation, wound healing, and tumor invasion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Newman, S A -- Frenz, D A -- Tomasek, J J -- Rabuzzi, D D -- HD18148/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1985 May 17;228(4701):885-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4001925" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cartilage/cytology/embryology ; *Cell Movement/drug effects ; Chick Embryo ; Collagen/*pharmacology ; Diffusion ; Extracellular Matrix/*physiology ; Fibroblasts/cytology ; Fibronectins/*pharmacology ; Humans ; In Vitro Techniques ; Kinetics ; Microspheres ; Movement
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 100
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    DNA elements are asymmetrically joined during the site-specific recombination of kappa immunoglobulin genes (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-10
    Description: Immunoglobulin K genes are constructed during lymphocyte differentiation by the joining of two DNA elements, VK and JK, to form both a VKJK coding unit and a reciprocal recombination product. The two products formed in single VK-to-JK joining events can be directly isolated through the use of a retrovirally introduced recombination substrate. The structural analysis of a number of recombinants and the derivation of secondary recombination products define some of the basic features of the mechanism of immunoglobulin gene assembly.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewis, S -- Gifford, A -- Baltimore, D -- New York, N.Y. -- Science. 1985 May 10;228(4700):677-85.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3158075" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacteriophage lambda/genetics ; Base Sequence ; DNA/*genetics ; *Genes, MHC Class II ; Immunoglobulin J-Chains/genetics ; Immunoglobulin Light Chains/*genetics ; Immunoglobulin Variable Region/genetics ; Immunoglobulin kappa-Chains/*genetics ; Mice ; *Recombination, Genetic
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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