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  • Humans  (2,442)
  • Mice  (597)
  • American Association for the Advancement of Science (AAAS)  (2,841)
  • 1990-1994  (2,841)
Collection
Keywords
Publisher
Years
Year
  • 101
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    Learning to drink from a fire hose (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-05-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Waldrop, M M -- New York, N.Y. -- Science. 1990 May 11;248(4956):674-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2333516" target="_blank"〉PubMed〈/a〉
    Keywords: *Computer Communication Networks ; *Computer Systems ; Government Agencies ; Human Genome Project ; Humans ; *Information Systems ; Software ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    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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  • 102
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    Gerontology research comes of age (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-11-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibbons, A -- New York, N.Y. -- Science. 1990 Nov 2;250(4981):622-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2237413" target="_blank"〉PubMed〈/a〉
    Keywords: Aging/*physiology ; Animals ; Cells, Cultured ; DNA Damage ; Free Radicals ; Humans ; Life Expectancy
    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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  • 103
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    Overcoming rejection to win a Nobel Prize (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-10-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1990 Oct 19;250(4979):378.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2218543" target="_blank"〉PubMed〈/a〉
    Keywords: History, 20th Century ; Humans ; *Nobel Prize ; Transplantation/*history ; United States
    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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  • 104
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    Billion-dollar orphans: prescription for trouble (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-05-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibbons, A -- New York, N.Y. -- Science. 1990 May 11;248(4956):678-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2333518" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*drug therapy/economics ; Adenosine Deaminase/*supply & distribution ; Drug Industry/*economics ; Humans ; *Legislation, Drug ; Nucleoside Deaminases/*supply & distribution ; Orphan Drug Production/*economics ; United States
    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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  • 105
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    Toxoplasma gondii: fusion competence of parasitophorous vacuoles in Fc receptor-transfected fibroblasts (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-08-10
    Description: After actively entering its host cells, the protozoan parasite Toxoplasma gondii resides in an intracellular vacuole that is completely unable to fuse with other endocytic or biosynthetic organelles. The fusion blocking requires entry of viable organisms but is irreversible: fusion competence of the vacuole is not restored if the parasite is killed after entry. The fusion block can be overcome, however, by altering the parasite's route of entry. Thus, phagocytosis of viable antibody-coated T. gondii by Chinese hamster ovary cells transfected with macrophage-lymphocyte Fc receptors results in the formation of vacuoles that are capable of both fusion and acidification. Phagocytosis and fusion appear to involve a domain of the Fc receptor cytoplasmic tail distinct from that required for localization at clathrin-coated pits. These results suggest that the mechanism of fusion inhibition is likely to reflect a modification of the vacuole membrane at the time of its formation, as opposed to the secretion of a soluble inhibitor by the parasite.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Joiner, K A -- Fuhrman, S A -- Miettinen, H M -- Kasper, L H -- Mellman, I -- New York, N.Y. -- Science. 1990 Aug 10;249(4969):641-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Yale University School of Medicine, New Haven, CT 06510.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2200126" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Fibroblasts/parasitology/physiology/ultrastructure ; Fluorescent Antibody Technique ; Lysosomes/physiology/ultrastructure ; Macrophages/immunology ; Membrane Fusion ; Mice ; Mice, Inbred BALB C ; Phagocytosis ; Receptors, Fc/genetics/*physiology ; Toxoplasma/growth & development/*physiology ; *Transfection ; Vacuoles/*parasitology/physiology/ultrastructure
    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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  • 106
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    Import rules threaten research on primates (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-06-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1990 Jun 1;248(4959):1071-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2160732" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Experimentation ; Animals ; Animals, Laboratory/*microbiology ; Centers for Disease Control and Prevention (U.S.) ; Cercopithecidae/*microbiology ; Ebolavirus/*isolation & purification ; Federal Government ; *Government Regulation ; Hemorrhagic Fevers, Viral/*prevention & control/veterinary ; Humans ; Internationality ; Philippines ; Quarantine ; Rhabdoviridae/*isolation & purification ; United States ; Zoonoses/*prevention & control
    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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  • 107
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    Effect of phospholipase C-gamma overexpression on PDGF-induced second messengers and mitogenesis (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-05-04
    Description: Platelet-derived growth factor (PDGF) stimulates phospholipase C (PLC) activity and the phosphorylation of the gamma isozyme of PLC (PLC-gamma) in vitro and in living cells. The role of PLC-gamma in the phosphoinositide signaling pathway was addressed by examining the effect of overexpression of PLC-gamma on cellular responses to PDGF. Overexpression of PLC-gamma correlated with PDGF-induced tyrosine phosphorylation of PLC-gamma and with PDGF-induced breakdown of phosphatidylinositol 4,5-bisphosphate (PIP2). However, neither bradykinin- nor lysophosphatidic acid-induced phosphoinositide metabolism was enhanced in the transfected cells, suggesting that the G protein-coupled phosphoinositide responses to these ligands are mediated by other PLC isozymes. The enhanced PDGF-induced generation of inositol trisphosphate (IP3) did not enhance intracellular calcium signaling or influence PDGF-induced DNA synthesis. Thus, enzymes other than PLC-gamma may limit PDGF-induced calcium signaling and DNA synthesis. Alternatively, PDGF-induced calcium signaling and DNA synthesis may use biochemical pathways other than phosphoinositide metabolism for signal transduction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Margolis, B -- Zilberstein, A -- Franks, C -- Felder, S -- Kremer, S -- Ullrich, A -- Rhee, S G -- Skorecki, K -- Schlessinger, J -- New York, N.Y. -- Science. 1990 May 4;248(4955):607-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Rorer Biotechnology, King of Prussia, PA 19406.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2333512" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/physiology ; Cattle ; Cell Division/*drug effects ; Cells, Cultured ; DNA Replication/drug effects ; Genetic Vectors ; Inositol Phosphates/metabolism ; Isoenzymes/biosynthesis/*genetics/metabolism ; Kinetics ; Mice ; Platelet-Derived Growth Factor/*pharmacology ; Second Messenger Systems/*drug effects ; Transfection ; Type C Phospholipases/biosynthesis/*genetics/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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  • 108
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    Insights from broken brains (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-05-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1990 May 18;248(4957):812-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2188359" target="_blank"〉PubMed〈/a〉
    Keywords: Brain/pathology/*physiopathology ; Brain Injuries/pathology/*physiopathology ; Consciousness/physiology ; History, 20th Century ; Humans ; Iowa ; Magnetic Resonance Imaging ; Registries
    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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  • 109
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    Bovine growth hormone: human food safety evaluation (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-08-24
    Description: Scientists in the Food and Drug Administration (FDA), after reviewing the scientific literature and evaluating studies conducted by pharmaceutical companies, have concluded that the use of recombinant bovine growth hormone (rbGH) in dairy cattle presents no increased health risk to consumers. Bovine GH is not biologically active in humans, and oral toxicity studies have demonstrated that rbGH is not orally active in rats, a species responsive to parenterally administered bGH. Recombinant bGH treatment produces an increase in the concentration of insulin-like growth factor-I (IGF-I) in cow's milk. However, oral toxicity studies have shown that bovine IGF-I lacks oral activity in rats. Additionally, the concentration of IGF-I in milk of rbGH-treated cows is within the normal physiological range found in human breast milk, and IGF-I is denatured under conditions used to process cow's milk for infant formula. On the basis of estimates of the amount of protein absorbed intact in humans and the concentration of IGF-I in cow's milk during rbGH treatment, biologically significant levels of intact IGF-I would not be absorbed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Juskevich, J C -- Guyer, C G -- New York, N.Y. -- Science. 1990 Aug 24;249(4971):875-84.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Food and Drug Administration, Center for Veterinary Medicine, Office of New Animal Drug Evaluation, Rockville, MD 20857.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2203142" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cattle ; Food/*standards ; Growth Hormone/pharmacology/physiology/*standards ; Humans ; Insulin-Like Growth Factor I/physiology ; Recombinant Proteins/standards ; United States ; United States Food and Drug Administration
    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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  • 110
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    Spontaneous order, evolution, and life (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-03-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Waldrop, M M -- New York, N.Y. -- Science. 1990 Mar 30;247(4950):1543-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2321014" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Gene Expression Regulation ; Humans ; *Origin of Life
    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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  • 111
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    T cells responsive to myelin basic protein in patients with multiple sclerosis (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-02-09
    Description: Gene mutation in vivo in human T lymphocytes appears to occur preferentially in dividing cells. Individuals with multiple sclerosis (MS) are assumed to have one or more populations of diving T cells that are being stimulated by autoantigens. Mutant T cell clones from MS patients were isolated and tested for reactivity to myelin basic protein, an antigen that is thought to participate in the induction of the disease. The hypoxanthine guanine phosphoribosyltransferase (hprt) clonal assay was used to determine mutant frequency values in MS patients with chronic progressive disease. Eleven of 258 thioguanine-resistant (hprt-) T cell clones from five of the six MS patients who were tested proliferated in response to human myelin basic protein without prior in vitro exposure to this antigen. No wild-type clones from these patients, nor any hprt- or wild-type clones from three healthy individuals responded to myelin basic protein. Thus, T cell clones that react with myelin basic protein can be isolated from the peripheral blood of MS patients.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Allegretta, M -- Nicklas, J A -- Sriram, S -- Albertini, R J -- CA30688-07/CA/NCI NIH HHS/ -- NS00849/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1990 Feb 9;247(4943):718-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genetics Laboratory, University of Vermont, Burlington 05401.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1689076" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Autoantigens/immunology ; Cell Division ; Clone Cells/immunology ; Female ; Humans ; Hypoxanthine Phosphoribosyltransferase/genetics ; Male ; Middle Aged ; Multiple Sclerosis/genetics/*immunology ; Mutation ; Myelin Basic Protein/*immunology ; T-Lymphocytes/drug effects/*immunology ; Thioguanine/pharmacology ; X Chromosome
    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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  • 112
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    Experts clash over cancer data (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-11-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1990 Nov 16;250(4983):900-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2237436" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Neoplasms/*mortality ; United States
    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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  • 113
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    Smokers: black and white (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-07-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schneiderman, M -- Davis, D L -- Wagener, D K -- New York, N.Y. -- Science. 1990 Jul 20;249(4966):228-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2374921" target="_blank"〉PubMed〈/a〉
    Keywords: African Americans ; European Continental Ancestry Group ; Female ; Humans ; Lung Neoplasms/mortality ; Male ; Prevalence ; Smoking/*epidemiology ; United States
    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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  • 114
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    The human genome project: past, present, and future (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-04-06
    Description: This article presents a short discussion of the development of the human genome program in the United States, a summary of the current status of the organization and administration of the National Institutes of Health component of the program, and some prospects for the future directions of the program and the applications of genome information.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, J D -- New York, N.Y. -- Science. 1990 Apr 6;248(4951):44-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Center for Human Genome Research, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2181665" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Budgets ; Dna ; Federal Government ; *Human Genome Project/economics/organization & administration ; Humans ; International Cooperation ; Internationality ; National Institutes of Health (U.S.)/organization & administration ; Research Support as Topic ; Risk Assessment ; United States
    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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  • 115
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    A mouse model of the aniridia-Wilms tumor deletion syndrome (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-11-09
    Description: Deletion of chromosome 11p13 in humans produces the WAGR syndrome, consisting of aniridia (an absence or malformation of the iris), Wilms tumor (nephroblastoma), genitourinary malformations, and mental retardation. An interspecies backcross between Mus musculus/domesticus and Mus spretus was made in order to map the homologous chromosomal region in the mouse genome and to define an animal model of this syndrome. Nine evolutionarily conserved DNA clones from proximal human 11p were localized on mouse chromosome 2 near Small-eyes (Sey), a semidominant mutation that is phenotypically similar to aniridia. Analysis of Dickie's Small-eye (SeyDey), a poorly viable allele that has pleiotropic effects, revealed the deletion of three clones, f3, f8, and k13, which encompass the aniridia (AN2) and Wilms tumor susceptibility genes in man. Unlike their human counterparts, SeyDey/+ mice do not develop nephroblastomas. These findings suggest that the Small-eye defect is genetically equivalent to human aniridia, but that loss of the murine homolog of the Wilms tumor gene is not sufficient for tumor initiation. A comparison among Sey alleles suggests that the AN2 gene product is required for induction of the lens and nasal placodes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Glaser, T -- Lane, J -- Housman, D -- 2 T32 GMO7753-11/GM/NIGMS NIH HHS/ -- GM27882/GM/NIGMS NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1990 Nov 9;250(4982):823-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Cancer Research, Massachusetts Institute of Technology, Cambridge 02139.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2173141" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aniridia/*genetics ; Blotting, Southern ; Chromosome Deletion ; Chromosome Mapping ; DNA/analysis ; *Disease Models, Animal ; Eye/embryology/pathology ; Female ; Genes, Wilms Tumor/*genetics ; Genetic Markers ; Kidney Neoplasms/*genetics ; Male ; Mice ; Mice, Inbred C3H ; Mice, Inbred C57BL ; Muridae ; Mutation ; Phenotype ; Polymorphism, Genetic ; Syndrome ; Wilms Tumor/*genetics
    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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  • 116
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    LFA-3, CD44, and CD45: physiologic triggers of human monocyte TNF and IL-1 release (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-09-14
    Description: The monocyte-derived cytokines, tumor necrosis factor-alpha (TNF-alpha) and interleukin-1 beta (IL-1 beta), are central regulators of the immune response, but the physiologic stimuli for their release remain largely undefined. Engagement of three monocyte glycoproteins, LFA-3, CD44, and CD45, by specific monoclonal antibodies immobilized on plastic induced TNF-alpha and IL-1 beta release. In addition, TNF-alpha was released when monocyte LFA-3 bound immobilized, purified CD2, which is its physiologic receptor. Thus, a receptor-ligand interaction that mediates cell-cell adhesion can transmit the necessary signals for the release of monokines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Webb, D S -- Shimizu, Y -- Van Seventer, G A -- Shaw, S -- Gerrard, T L -- New York, N.Y. -- Science. 1990 Sep 14;249(4974):1295-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Food and Drug Administration, Division of Cytokine Biology, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1697984" target="_blank"〉PubMed〈/a〉
    Keywords: Antibodies, Monoclonal ; Antigens, CD45 ; Antigens, CD58 ; Antigens, Differentiation/*physiology ; Antigens, Surface/*physiology ; Histocompatibility Antigens/*physiology ; Humans ; Interleukin-1/secretion ; Lipopolysaccharides/pharmacology ; Membrane Glycoproteins/*physiology ; Monocytes/drug effects/*metabolism ; Monokines/*secretion ; Receptors, Lymphocyte Homing ; Tumor Necrosis Factor-alpha/secretion
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 117
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    Thymic epithelium tolerizes for histocompatibility antigens (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-03-23
    Description: The role of thymic epithelium in the establishment of tissue tolerance was analyzed with a murine chimeric system. All T cells differentiated from birth onward in a thymus comprising allogeneic epithelium and syngeneic hematopoietic cells. Embryonic thymic rudiments that contained no hematopoietic cells from C3H (H-2k) donors were grafted to newborn athymic (nude) BALB/c (H-2d) mice. Chimeras that had normal T cell numbers and function rejected third-party skin grafts, but permanently accepted grafts syngeneic to the thymic epithelium. In vitro functional assays did not always correlate with the state of tolerance in vivo. Thus, pure thymic epithelium induces tolerance to histocompatibility antigens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Salaun, J -- Bandeira, A -- Khazaal, I -- Calman, F -- Coltey, M -- Coutinho, A -- Le Douarin, N M -- New York, N.Y. -- Science. 1990 Mar 23;247(4949 Pt 1):1471-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Instit d'Embryologie cellulaire et moleculaire du CNRS, College de France, Nogent-sur-Marne.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2321009" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chimera ; Epithelium/immunology ; Graft Rejection/immunology ; Graft Survival/*immunology ; Histocompatibility Antigens/*immunology ; Immune Tolerance/immunology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C3H ; Mice, Inbred C57BL ; Mice, Nude ; Thymus Gland/*immunology
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    Broadly neutralizing antibodies elicited by the hypervariable neutralizing determinant of HIV-1 (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-12-14
    Description: The principal neutralizing determinant (PND) of human immunodeficiency virus (HIV)-1 resides within the V3 loop of the envelope protein. Antibodies elicited by peptides of this region were able to neutralize diverse isolates. Serum from one of three animals immunized with the human T cell lymphoma virus (HTLV)-IIIMN PND peptide, RP142, neutralized MN and the sequence-divergent HTLV-IIIB isolate. Serum from one of three animals immunized with a 13-amino acid IIIB PND peptide (RP337) also neutralized both of these isolates. Characterization of these sera revealed that the cross-neutralizing antibodies bound the amino acid sequence GlyProGlyArgAlaPhe (GPGRAF) that is present in both isolates. This sequence is frequently found in the PNDs analyzed in randomly selected HIV-1 isolates. Sera from two rabbits immunized with a peptide containing only the GPGRAF residues neutralized divergent isolates, including IIIB and MN.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Javaherian, K -- Langlois, A J -- LaRosa, G J -- Profy, A T -- Bolognesi, D P -- Herlihy, W C -- Putney, S D -- Matthews, T J -- New York, N.Y. -- Science. 1990 Dec 14;250(4987):1590-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Surgery, Duke University Medical School, Durham, NC 27710.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1703322" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/microbiology ; Amino Acid Sequence ; Animals ; Enzyme-Linked Immunosorbent Assay ; Epitopes/*immunology ; Guinea Pigs ; HIV Antibodies/*immunology ; HIV Antigens/*immunology ; HIV-1/*immunology ; Humans ; Immune Sera/immunology ; Immunization ; Molecular Sequence Data ; Neutralization Tests ; Rabbits ; Viral Envelope Proteins/immunology
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    The microchip microbe hunters (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-02-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alper, J -- New York, N.Y. -- Science. 1990 Feb 16;247(4944):804-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2154848" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/drug therapy ; *Antiviral Agents/therapeutic use ; Capsid/ultrastructure ; Common Cold/*drug therapy ; Drug Design ; Humans ; Models, Molecular ; Protein Conformation ; Rhinovirus/ultrastructure ; Software
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    Drug policy: striking the right balance (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-09-28
    Description: Drug policy should strike the right balance between reducing the harm done by psychoactive drugs and reducing the harm that results from strict legal prohibitions and their enforcement. It is concluded, from a cost-benefit analysis based on pharmacologic, toxicologic, sociologic, and historical facts, that radical steps to repeal the prohibitions on presently illicit drugs would be likely, on balance, to make matters worse rather than better. Specific recommendations are offered for ameliorating the dangers to users and to society that are posed by each addictive drug.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldstein, A -- Kalant, H -- New York, N.Y. -- Science. 1990 Sep 28;249(4976):1513-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stanford University, CA 94305.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2218493" target="_blank"〉PubMed〈/a〉
    Keywords: Caffeine ; Cocaine ; Ethanol ; *Health Policy ; Humans ; Plants, Toxic ; *Psychotropic Drugs/adverse effects/toxicity ; Street Drugs ; Tobacco ; United States
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    HTLV-I trans-activator protein, tax, is a trans-repressor of the human beta-polymerase gene (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-03-02
    Description: Human T cell leukemia virus type I (HTLV-I) is the etiological agent for adult T cell leukemia (ATL). The HTLV-I trans-activator protein Tax can activate the expression of its own long terminal repeat (LTR) and many cellular and viral genes. Tax down-regulated the expression of human beta-polymerase (hu beta-pol), a cellular enzyme involved in host cell DNA repair. This finding suggests a possible correlation between HTLV-I infection and host chromosomal damage, which is often seen in ATL cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jeang, K T -- Widen, S G -- Semmes, O J 4th -- Wilson, S H -- New York, N.Y. -- Science. 1990 Mar 2;247(4946):1082-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2309119" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cell Line ; Cell Line, Transformed ; DNA Polymerase I/*genetics ; DNA, Viral/genetics ; Gene Expression Regulation, Enzymologic ; Gene Expression Regulation, Viral ; Human T-lymphotropic virus 1/*genetics ; Humans ; Molecular Sequence Data ; Plasmids ; Promoter Regions, Genetic ; RNA, Messenger/biosynthesis ; Repetitive Sequences, Nucleic Acid ; Repressor Proteins/biosynthesis/*genetics ; Trans-Activators/biosynthesis/*genetics ; Transcription Factors/*genetics ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Meta-analysis in the breech (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-08-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mann, C -- New York, N.Y. -- Science. 1990 Aug 3;249(4968):476-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2382129" target="_blank"〉PubMed〈/a〉
    Keywords: Clinical Trials as Topic/*methods ; Humans ; *Meta-Analysis as Topic ; Research Design
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    New HIV infection mechanism? (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-11-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1990 Nov 9;250(4982):758.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2237427" target="_blank"〉PubMed〈/a〉
    Keywords: AIDS Dementia Complex/*etiology ; HIV/*physiology ; HIV Infections/*etiology ; Humans ; Neurons/*microbiology
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    Paleoanthropology gets physical (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-02-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1990 Feb 16;247(4944):798-801.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2369435" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Anthropology ; Carbon Radioisotopes ; DNA, Mitochondrial/genetics ; Hominidae/*genetics ; Humans ; Israel ; Mutation ; *Paleontology ; South Africa
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    Requirement for activin A and transforming growth factor--beta 1 pro-regions in homodimer assembly (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-03-16
    Description: Many proteins are initially synthesized as part of a large precursor. The role of the pro-region in the biosynthesis of transforming growth factor--beta 1 (TGF-beta 1) and activin A, two structurally related disulfide-linked homodimers synthesized as large precursors, was studied. Vectors that expressed either the pro-region or the mature regions of these molecules were used in complementation experiments, only when the pro-region was coexpressed with the mature region did intracellular dimerization and secretion of biologically active homodimers occur. The pro-regions of activin A and TGF-beta 1, therefore, aid the folding, disulfide bond formation, and export of their respective homodimers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gray, A M -- Mason, A J -- New York, N.Y. -- Science. 1990 Mar 16;247(4948):1328-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology, Genentech, Inc., South San Francisco, CA 94080.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2315700" target="_blank"〉PubMed〈/a〉
    Keywords: Activins ; Amino Acid Sequence ; Cells, Cultured ; Genetic Complementation Test ; Humans ; Inhibins/*biosynthesis/ultrastructure ; Macromolecular Substances ; Molecular Sequence Data ; Protein Processing, Post-Translational ; Protein Sorting Signals/physiology ; Transfection ; Transforming Growth Factors/*biosynthesis
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    Hair analysis (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-11-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez, F -- Poet, T S -- Watson, R R -- New York, N.Y. -- Science. 1990 Nov 23;250(4984):1070.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2251495" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cocaine/metabolism/pharmacokinetics ; Hair/*chemistry/metabolism ; Humans ; Male ; Mice ; Morphine/metabolism/pharmacokinetics ; *Substance Abuse Detection
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    Subtle cerebellar phenotype in mice homozygous for a targeted deletion of the En-2 homeobox (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-08
    Description: The two mouse genes, En-1 and En-2, that are homologs of the Drosophila segmentation gene engrailed, show overlapping spatially restricted patterns of expression in the neural tube during embryogenesis, suggestive of a role in regional specification. Mice homozygous for a targeted mutation that deletes the homeobox were viable and showed no obvious defects in embryonic development. This may be due to functional redundancy of En-2 and the related En-1 gene product during embryogenesis. Consistent with this hypothesis, the mutant mice showed abnormal foliation in the adult cerebellum, where En-2, and not En-1, is normally expressed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Joyner, A L -- Herrup, K -- Auerbach, B A -- Davis, C A -- Rossant, J -- HD25334/HD/NICHD NIH HHS/ -- NS18381/NS/NINDS NIH HHS/ -- NS20591/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1991 Mar 8;251(4998):1239-43.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1672471" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blastocyst ; Cell Line ; Cerebellum/*anatomy & histology/embryology/pathology ; Chimera ; *Chromosome Deletion ; Female ; *Genes, Homeobox ; Male ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Nervous System/embryology ; Phenotype
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    CD14 and immune response to lipopolysaccharide (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maliszewski, C R -- New York, N.Y. -- Science. 1991 May 31;252(5010):1321-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1718034" target="_blank"〉PubMed〈/a〉
    Keywords: Antigens, CD/*immunology ; Antigens, CD14 ; Antigens, Differentiation, Myelomonocytic/*immunology ; Humans ; Lipopolysaccharides/*immunology ; Macrophages/immunology ; Monocytes/immunology
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    AIDS: the evolution of an infection (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1991 Nov 15;254(5034):941.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948079" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/immunology/*microbiology ; Biological Evolution ; HIV-1/*genetics ; Humans
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    NIH: the price of neglect (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weiss, R -- New York, N.Y. -- Science. 1991 Feb 1;251(4993):508-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1990424" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; *Morale ; National Institutes of Health (U.S.)/*organization & administration ; Salaries and Fringe Benefits ; United States
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    Reproductive behavior and health in consanguineous marriages (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-05-10
    Description: In many regions of Asia and Africa, consanguineous marriages currently account for approximately 20 to 50% of all unions, and preliminary observations indicate that migrants from these areas continue to contract marriages with close relatives when resident in North America and Western Europe. Consanguinity is associated with increased gross fertility, due at least in part to younger maternal age at first livebirth. Morbidity and mortality also may be elevated, resulting in comparable numbers of surviving offspring in consanguineous and nonconsanguineous families. With advances in medicine and public health, genetic disorders will account for an increased proportion of disease worldwide. Predictably, this burden will fall more heavily on countries and communities in which consanguinity is strongly favored, as the result of the expression of deleterious recessive genes. However, studies conducted in such populations indicate that the adverse effects associated with inbreeding are experienced by a minority of families.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bittles, A H -- Mason, W M -- Greene, J -- Rao, N A -- New York, N.Y. -- Science. 1991 May 10;252(5007):789-94.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉King's College, University of London.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2028254" target="_blank"〉PubMed〈/a〉
    Keywords: Congenital Abnormalities/epidemiology ; *Consanguinity ; Female ; Humans ; India ; Infertility ; Marriage ; Maternal Age ; Parity ; Pregnancy ; Pregnancy Outcome ; Regression Analysis ; Sexual Behavior/*statistics & numerical data
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    A $9-billion budget for NIH (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1991 Nov 8;254(5033):791.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948060" target="_blank"〉PubMed〈/a〉
    Keywords: *Budgets ; Humans ; *National Institutes of Health (U.S.) ; Neoplasms ; *Research Support as Topic ; United States
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    WHO AIDS program: moving on a new track (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1991 Oct 25;254(5031):511-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948020" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*prevention & control ; Humans ; United States ; United States Dept. of Health and Human Services ; World Health Organization
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    Tape trouble (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-08-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Aug 9;253(5020):611.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1871595" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome ; Confidentiality ; Humans ; *National Institutes of Health (U.S.) ; *Scientific Misconduct ; United States
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    Participation of the TATA factor in transcription of the yeast U6 gene by RNA polymerase C (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-01-25
    Description: Fractionation of transcription extracts has led to the identification of multiple transcription factors specific for each form of nuclear RNA polymerase. Accurate transcription in vitro of the yeast U6 RNA gene by RNA polymerase C requires at least two factors. One of them was physically and functionally indistinguishable from transcription factor IID (TFIID or BTF1), a pivotal component of polymerase B transcription complexes, which binds to the TATA element. Purified yeast TFIID (yIID) or bacterial extracts that contained recombinant yIID were equally competent to direct specific transcription of the U6 gene by RNA polymerase C. The results suggest the formation of a hybrid transcription machinery, which may imply an evolutionary relation between class B and class C transcription factors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Margottin, F -- Dujardin, G -- Gerard, M -- Egly, J M -- Huet, J -- Sentenac, A -- New York, N.Y. -- Science. 1991 Jan 25;251(4992):424-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departement de Biologie, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1989075" target="_blank"〉PubMed〈/a〉
    Keywords: Electrophoresis, Polyacrylamide Gel ; HeLa Cells ; Humans ; Nuclear Proteins ; RNA Polymerase III/*metabolism ; RNA, Fungal/biosynthesis/genetics ; RNA, Small Nuclear/*genetics ; Saccharomyces cerevisiae/*genetics ; TATA Box/*genetics ; Templates, Genetic ; Transcription Factor TFIID ; Transcription Factor TFIIIB ; Transcription Factors/*genetics ; *Transcription Factors, General ; *Transcription, Genetic ; *Transcriptional Elongation Factors
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    Negative regulation of CD45 protein tyrosine phosphatase activity by ionomycin in T cells (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-09-20
    Description: CD45 is a leukocyte-specific, transmembrane protein tyrosine phosphatase (PTPase) required for T cell responsiveness. How the activity of PTPases is regulated in vivo is unclear. Treatment of murine thymocytes and a variety of murine T cell lines with the calcium ionophore ionomycin decreased CD45 PTPase activity. Ionomycin treatment also led to a decreased phosphorylation of serine residues in CD45. These results indicate that increased intracellular calcium modulates CD45 PTPase activity, demonstrating regulation of CD45 PTPase activity in vivo, and also implicate serine dephosphorylation as a possible mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ostergaard, H L -- Trowbridge, I S -- CA-17733/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 Sep 20;253(5026):1423-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cancer Biology, Salk Institute, San Diego, CA 92186.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1654595" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/*metabolism ; Antigens, CD45 ; Cell Line ; Histocompatibility Antigens/*metabolism ; Ionomycin/*pharmacology ; Kinetics ; Mice ; Mice, Inbred BALB C ; Phosphoprotein Phosphatases/*metabolism ; Protein Tyrosine Phosphatases ; Spleen/drug effects/enzymology/immunology ; T-Lymphocytes/drug effects/*enzymology/immunology ; Thymus Gland/immunology
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    Children and divorce (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Aug 30;253(5023):952.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1887223" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; *Divorce ; *Emotions ; Humans ; Longitudinal Studies ; Mental Disorders/*epidemiology/etiology ; *Psychology, Child ; United States
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  • 138
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    Differentiation of 3T3-L1 fibroblasts to adipocytes induced by transfection of ras oncogenes (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-02
    Description: Mammalian 3T3-L1 cells differentiate into adipocytes after continuous exposure to pharmacological doses of insulin or physiological doses of insulin-like growth factor I (IGF-1). Expression of transfected ras oncogenes led to differentiation of these cells into adipocytes in the absence of externally added insulin or IGF-I. Cells transfected with normal ras genes or the tyrosine kinase trk oncogene did not differentiate. Transfection with a dominant inhibitory ras mutant resulted in inhibition of differentiation. Exposure of untransfected 3T3-L1 cells to insulin stimulated formation of the active Ras.GTP complex. These observations indicate that Ras proteins participate in signal transduction pathways initiated by insulin and IGF-I in these cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Benito, M -- Porras, A -- Nebreda, A R -- Santos, E -- New York, N.Y. -- Science. 1991 Aug 2;253(5019):565-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases, National Institute of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1857988" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/*cytology ; Animals ; Blotting, Northern ; *Cell Differentiation ; Cell Line ; *Cell Transformation, Neoplastic ; Fibroblasts/cytology ; *Genes, ras ; Mice ; RNA, Messenger/analysis/genetics ; *Transfection
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    An unexpectedly efficient catalytic antibody operating by ping-pong and induced fit mechanisms (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-05-03
    Description: A transition state analogue was used to produce a mouse antibody that catalyzes transesterification in water. The antibody behaves as a highly efficient catalyst with a covalent intermediate and the characteristic of induced fit. While some features of the catalytic pathway were programmed when the hapten was designed and reflect favorable substrate-antibody interactions, other features are a manifestation of the chemical potential of antibody diversity. The fact that antibodies recapitulate mechanisms and pathways previously thought to be a characteristic of highly evolved enzymes suggests that once an appropriate binding cavity is achieved, reaction pathways commensurate with the intrinsic chemical potential of proteins ensue.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wirsching, P -- Ashley, J A -- Benkovic, S J -- Janda, K D -- Lerner, R A -- GM43858-01/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 May 3;252(5006):680-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Scripps Research Institute, La Jolla, CA 92037.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2024120" target="_blank"〉PubMed〈/a〉
    Keywords: Acylation ; Alcohols/metabolism ; Animals ; Antibodies, Monoclonal/immunology/*metabolism ; Antibody Specificity ; Binding Sites, Antibody ; *Catalysis ; Enzymes/metabolism ; Esterification ; Haptens ; Kinetics ; Mice ; Water
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  • 140
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    Inhibition of Rap1A binding to cytochrome b558 of NADPH oxidase by phosphorylation of Rap1A (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-20
    Description: Rap1A is a low molecular weight guanosine triphosphate (GTP)-binding protein in human neutrophil membranes whose cellular function is unknown. Rap1A was found to form stoichiometric complexes with the cytochrome b558 component of the phagocyte nicotinamide adenine dinucleotide phosphate (NADPH) oxidase system. The (guanosine-5'-O-(3-thiotriphosphate) (GTP-gamma-S)-bound form of Rap1A bound more tightly to cytochrome b558 than did the guanosine diphosphate-bound form. No complex formation was observed between cytochrome b558 and H-Ras-GTP-gamma-S or Rap1A-GTP-gamma-S that had been heat-inactivated, nor between Rap1A-GTP-gamma-S and hydrophobic proteins serving as controls. Complex formation between Rap1A-GTP-gamma-S and cytochrome b558 was inhibited by phosphorylation of Rap1A with cyclic adenosine monophosphate (cAMP)-dependent protein kinase. These observations suggest that Rap1A may participate in the structure or regulation of the NADPH oxidase system and that this function of the Rap1A protein may be altered by phosphorylation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bokoch, G M -- Quilliam, L A -- Bohl, B P -- Jesaitis, A J -- Quinn, M T -- 5RO126711/PHS HHS/ -- GM39434/GM/NIGMS NIH HHS/ -- GM44428/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Dec 20;254(5039):1794-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, Scripps Research Institute, La Jolla, CA 92037.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1763330" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Chromatography, Gel ; Cytochrome b Group/isolation & purification/*metabolism ; GTP-Binding Proteins/antagonists & inhibitors/isolation & ; purification/*metabolism ; Guanosine 5'-O-(3-Thiotriphosphate)/metabolism ; Humans ; Kinetics ; Macromolecular Substances ; NADH, NADPH Oxidoreductases/*metabolism ; NADPH Oxidase ; Neutrophils/enzymology ; Phosphorylation ; Protein Binding ; Protein Kinase C/metabolism ; Proto-Oncogene Proteins/metabolism ; Recombinant Proteins/antagonists & inhibitors/isolation & purification/metabolism ; rap GTP-Binding Proteins
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  • 141
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    Isolation of an active human transposable element (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-30
    Description: Two de novo insertions of truncated L1 elements into the factor VIII gene on the X chromosome have been identified that produced hemophilia A. A full-length L1 element that is the likely progenitor of one of these insertions was isolated by its sequence identity to the factor VIII insertion. This L1 element contains two open-reading frames and is one of at least four alleles of a locus on chromosome 22 that has been occupied by an L1 element for at least 6 million years.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dombroski, B A -- Mathias, S L -- Nanthakumar, E -- Scott, A F -- Kazazian, H H Jr -- New York, N.Y. -- Science. 1991 Dec 20;254(5039):1805-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1662412" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Base Sequence ; Chromosomes, Human, Pair 22 ; *DNA Transposable Elements ; Factor VIII/*genetics ; Genome, Human ; Hemophilia A/*genetics ; Humans ; Molecular Sequence Data ; Open Reading Frames ; Restriction Mapping ; Sequence Homology, Nucleic Acid ; X Chromosome
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    Breast cancer: stalemate in the war on cancer (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1991 Dec 20;254(5039):1719-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1763320" target="_blank"〉PubMed〈/a〉
    Keywords: Breast Neoplasms/*economics/prevention & control/therapy ; Female ; Government Agencies ; Humans ; National Institutes of Health (U.S.) ; Research Support as Topic ; United States
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  • 143
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    Lateral movements of membrane glycoproteins restricted by dynamic cytoplasmic barriers (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-29
    Description: Cell membranes often are patchy, composed of lateral domains. These domains may be formed by barriers within or on either side of the membrane bilayer. Major histocompatibility complex (MHC) class 1 molecules that were either transmembrane- (H-2Db) or glycosylphosphatidylinositol (GPI)-anchored (Qa2) were labeled with antibody-coated gold particles and moved across the cell surface with a laser optical tweezers until they encountered a barrier, the barrier-free path length (BFP). At room temperature, the BFPs of Qa2 and H-2Db were 1.7 +/- 0.2 and 0.6 +/- 0.1 (micrometers +/- SEM), respectively. Barriers persisted at 34 degrees C, although the BFP for both MHC molecules was fivefold greater at 34 degrees C than at 23 degrees C. This indicates that barriers to lateral movement are primarily on the cytoplasmic half of the membrane and are dynamic.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Edidin, M -- Kuo, S C -- Sheetz, M P -- AL14584/PHS HHS/ -- GM 36277/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Nov 29;254(5036):1379-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Johns Hopkins University, Baltimore, MD 21218.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1835798" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Cell Line ; Glycolipids/physiology ; Glycosylphosphatidylinositols ; Gold ; H-2 Antigens/*physiology ; Histocompatibility Antigens Class I/*physiology ; *Lipid Bilayers ; Membrane Glycoproteins/*physiology ; Mice ; Phosphatidylinositols/physiology ; Thermodynamics ; Transfection
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    Panel wavers on roots of cancer (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Aug 2;253(5019):509.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1857980" target="_blank"〉PubMed〈/a〉
    Keywords: Health Policy ; Humans ; Middle Aged ; Neoplasms/*epidemiology/etiology ; United States ; United States Public Health Service
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    Space may be bad for your health (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-09-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1991 Sep 27;253(5027):1491.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1896859" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Humans ; Models, Biological ; Monitoring, Physiologic ; Motion Sickness/*etiology ; Rats ; Scyphozoa ; *Space Flight ; *Weightlessness
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  • 146
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    Split anergy in a CD8+ T cell: receptor-dependent cytolysis in the absence of interleukin-2 production (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-03-08
    Description: Engagement of the antigen-specific receptor (TCR) of CD4+ T lymphocytes without a second (costimulatory) signal prevents the subsequent production of interleukin-2 (IL-2) by these cells. Because IL-2 is a key immunoregulatory lymphokine and is also produced by a subset of CD8+ T cells that are able to kill target cells, the effect of engaging the TCR of one such clone in the absence of costimulatory signals was examined. The capacity for TCR-dependent IL-2 production was lost, indicating comparable costimulator-dependent signaling requirements for IL-2 production in CD4+ and CD8+ T cells. However, TCR-mediated cytotoxicity was not impaired, implying that costimulation is required for only certain TCR-dependent effector functions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Otten, G R -- Germain, R N -- New York, N.Y. -- Science. 1991 Mar 8;251(4998):1228-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lymphocyte Biology Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1900952" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/immunology ; Antigen-Presenting Cells/immunology ; Antigens, CD8 ; Antigens, Differentiation, T-Lymphocyte/*immunology ; Female ; Interleukin-2/biosynthesis/*physiology ; Kinetics ; Lymphocyte Activation ; Mice ; Mice, Inbred Strains ; Ovalbumin/immunology ; Rats ; Receptors, Antigen, T-Cell/*immunology ; Spleen/immunology/radiation effects ; T-Lymphocytes/*immunology
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    Identification of p53 gene mutations in bladder cancers and urine samples (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-05-03
    Description: Although bladder cancers are very common, little is known about their molecular pathogenesis. In this study, invasive bladder cancers were evaluated for the presence of gene mutations in the p53 suppressor gene. Of 18 tumors evaluated, 11 (61 percent) were found to have genetic alterations of p53. The alterations included ten point mutations resulting in single amino acid substitutions, and one 24-base pair deletion. In all but one case, the mutations were associated with chromosome 17p allelic deletions, leaving the cells with only mutant forms of the p53 gene products. Through the use of the polymerase chain reaction and oligomer-specific hybridization, p53 mutations were identified in 1 to 7 percent of the cells within the urine sediment of each of three patients tested. The p53 mutations are the first genetic alterations demonstrated to occur in a high proportion of primary invasive bladder cancers. Detection of such mutations ex vivo has clinical implications for monitoring individuals whose tumor cells are shed extracorporeally.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sidransky, D -- Von Eschenbach, A -- Tsai, Y C -- Jones, P -- Summerhayes, I -- Marshall, F -- Paul, M -- Green, P -- Hamilton, S R -- Frost, P -- CA09071/CA/NCI NIH HHS/ -- CA43460/CA/NCI NIH HHS/ -- CA49758/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 May 3;252(5006):706-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Oncology, Johns Hopkins University, Baltimore, MD 21231.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2024123" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Base Sequence ; Chromosome Deletion ; Chromosomes, Human, Pair 17 ; *Genes, p53 ; Humans ; Molecular Sequence Data ; *Mutation ; Nucleic Acid Hybridization ; Oligonucleotide Probes ; Polymerase Chain Reaction ; Urinary Bladder Neoplasms/*genetics/urine ; Urine/cytology
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    Linkage of a cardiac arrhythmia, the long QT syndrome, and the Harvey ras-1 gene (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-03
    Description: Genetic factors contribute to heart disease. In this study, linkage analyses have been performed in a family that is predisposed to sudden death from cardiac arrhythmias, the long QT syndrome (LQT). A DNA marker at the Harvey ras-1 locus (H-ras-1) was linked to LQT with a logarithm of the likelihood ratio for linkage (lod score) of 16.44 at theta = 0, which confirms the genetic basis of this trait and localizes this gene to the short arm of chromosome 11. As no recombination was observed between LQT and H-ras-1, and there is a physiological rationale for its involvement in this disease, ras becomes a candidate for the disease locus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keating, M -- Atkinson, D -- Dunn, C -- Timothy, K -- Vincent, G M -- Leppert, M -- New York, N.Y. -- Science. 1991 May 3;252(5006):704-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Human Genetics, University of Utah Health Sciences Center, Salt Lake City 84132.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1673802" target="_blank"〉PubMed〈/a〉
    Keywords: Chromosome Mapping ; Chromosomes, Human, Pair 11 ; Electrocardiography ; *Genes, ras ; Humans ; *Lod Score ; Long QT Syndrome/*genetics/physiopathology ; Mutation ; Pedigree ; Polymorphism, Restriction Fragment Length
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    Monopoly patents on AZT challenged (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-06-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1991 Jun 7;252(5011):1369.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2047848" target="_blank"〉PubMed〈/a〉
    Keywords: Drug Prescriptions/economics ; Humans ; *Patents as Topic ; *Zidovudine
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    Gallo concedes contamination (again) (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-06-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1991 Jun 7;252(5011):1369.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2047847" target="_blank"〉PubMed〈/a〉
    Keywords: *Hiv ; History, 20th Century ; Humans ; Male ; National Institutes of Health (U.S.) ; United States ; Virus Cultivation
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    Lysyl oxidase and rrg messenger RNA (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kenyon, K -- Contente, S -- Trackman, P C -- Tang, J -- Kagan, H M -- Friedman, R M -- P01 HL13262/HL/NHLBI NIH HHS/ -- R01 CA37351-04A1/CA/NCI NIH HHS/ -- R37 AR18880/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Aug 16;253(5021):802.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1678898" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blotting, Northern ; Cell Line ; *Cell Transformation, Neoplastic ; Gene Expression ; *Genes, Tumor Suppressor ; In Vitro Techniques ; Mice ; Protein-Lysine 6-Oxidase/*physiology ; RNA, Messenger/genetics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 152
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    A partnership between the dioxin receptor and a basic helix-loop-helix protein (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Johnson, E F -- New York, N.Y. -- Science. 1991 May 17;252(5008):924-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Experimental Medicine, Research Institute of Scripps Clinic, La Jolla, CA 92037.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1852074" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cytochrome P-450 Enzyme System/genetics/metabolism ; DNA-Binding Proteins/*physiology ; Dioxins/adverse effects/*toxicity ; *Environmental Exposure ; Humans ; Receptors, Aryl Hydrocarbon ; Receptors, Drug/*physiology ; Receptors, Glucocorticoid/physiology ; Safety
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  • 153
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    Direct molecular identification of the mouse pink-eyed unstable mutation by genome scanning (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-04-26
    Description: DNA sequences associated with the mouse pink-eyed unstable mutation were identified in the absence of closely linked molecular markers and without prior knowledge of the encoded gene product. This was accomplished by "genome scanning," a technique in which high-resolution Southern blots of genomic DNAs were hybridized to a dispersed and moderately repetitive DNA sequence. In this assay, pink-eyed unstable DNA was distinguished from the DNA of wild-type and revertant mice by enhanced hybridization to one of several hundred resolved fragments. The fragment showing enhanced hybridization in pink-eyed unstable DNA was cloned and found to lie within a DNA duplication that is located close to, or within, the pink-eyed dilution locus. The duplication associated with the mouse pink-eyed unstable mutation may mediate the high reversion frequency characteristic of this mutation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brilliant, M H -- Gondo, Y -- Eicher, E M -- CA06927/CA/NCI NIH HHS/ -- GM43840/GM/NIGMS NIH HHS/ -- RR05529/RR/NCRR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1991 Apr 26;252(5005):566-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Cancer Research, Fox Chase Cancer Center, Philadelphia, PA 19111.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1673574" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Blotting, Southern/methods ; DNA/genetics/isolation & purification ; Eye Color/*genetics ; *Genes ; Homozygote ; Mice ; Mice, Inbred C57BL ; Mice, Mutant Strains ; *Mutation ; Restriction Mapping ; Tyrosine 3-Monooxygenase/genetics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 154
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    Viruses in human cancers (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-22
    Description: Viruses may contribute to the development of human tumors by different mechanisms: indirectly by inducing immunosuppression or by modifying the host cell genome without persistence of viral DNA; directly by inducing oncoproteins or by altering the expression of host cell proteins at the site of viral DNA integration. Human cancers associated with papillomavirus, hepatitis B virus, Epstein-Barr virus, and human T cell leukemia-lymphoma virus infections are responsible for approximately 15 percent of the worldwide cancer incidence. Cancer of the cervix and hepatocellular carcinoma account for about 80 percent of virus-linked cancers. Because experimental and epidemiologic data imply a causative role for viruses, particularly in cervical and liver cancer, viruses must be thought of as the second most important risk factor for cancer development in humans, exceeded only by tobacco consumption.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉zur Hausen, H -- New York, N.Y. -- Science. 1991 Nov 22;254(5035):1167-73.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Deutsches Krebsforschungszentrum, Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1659743" target="_blank"〉PubMed〈/a〉
    Keywords: Anus Neoplasms/microbiology ; Female ; Genital Neoplasms, Female/microbiology ; Hepatitis B virus/pathogenicity ; Herpesvirus 4, Human/pathogenicity ; Human T-lymphotropic virus 1/pathogenicity ; Humans ; Leukemia-Lymphoma, Adult T-Cell/microbiology ; Liver Neoplasms/microbiology ; Neoplasms/*microbiology ; *Oncogenic Viruses ; Papillomaviridae/pathogenicity
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 155
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    New AIDS drug poised to move into development (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Dec 20;254(5039):1715.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1763318" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*drug therapy ; Antiviral Agents/*therapeutic use/toxicity ; *Benzodiazepines ; Drug Evaluation ; Drug Industry ; Gene Products, tat/*antagonists & inhibitors ; HIV/drug effects ; Humans ; *Pyrroles ; United States ; tat Gene Products, Human Immunodeficiency Virus
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 156
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    Linkage of faulty major histocompatibility complex class I to autoimmune diabetes (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-20
    Description: Pancreatic islet cells are the targets of an autoimmune response in type I diabetes. In the nonobese diabetic (NOD) mouse model of autoimmune diabetes, expression of major histocompatibility complex (MHC) class I proteins was inversely correlated with diabetes; in this mouse a mutation in the MHC class II-linked gene for the putative MHC class I peptide transporter was also present. Mice deficient in MHC class I expression because they do not produce beta 2-microglobulin also developed late onset autoimmune diabetes. In cells from humans with type I diabetes expression of MHC class I was decreased; subsets of prediabetics categorized as most likely to become hyperglycemic also had low MHC class I. T cell responses to self antigens are faulty in diabetics. In sets of genetically identical twins that are discordant for diabetes, the defect appeared to reside with the antigen presenting cell. Thus, a lack of surface MHC class I protein is associated with autoimmune diabetes; the concomitant defect in antigen presentation may impair the development of self tolerance, which could result in autoimmune disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Faustman, D -- Li, X P -- Lin, H Y -- Fu, Y E -- Eisenbarth, G -- Avruch, J -- Guo, J -- New York, N.Y. -- Science. 1991 Dec 20;254(5039):1756-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Harvard Medical School, Massachusetts General Hospital, Charlestown 02129.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1763324" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoimmune Diseases/*genetics ; Cytotoxicity, Immunologic ; Diabetes Mellitus, Type 1/genetics/*immunology ; Diseases in Twins ; Flow Cytometry ; Gene Expression ; *Genes, MHC Class I ; Humans ; *Lymphocyte Activation ; Lymphocytes/*immunology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mice, Inbred NOD ; Prediabetic State/genetics/immunology ; Spleen/immunology ; T-Lymphocytes/immunology
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  • 157
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    Putting AIDS research in perspective (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1991 Mar 8;251(4998):1172.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2006406" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*economics ; Behavioral Research ; *Biomedical Research ; Federal Government ; Humans ; National Institutes of Health (U.S.) ; *Research Support as Topic ; *Resource Allocation ; United States
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 158
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    Leadership shuffle at Sloan Kettering (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-06-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1991 Jun 7;252(5011):1372.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2047849" target="_blank"〉PubMed〈/a〉
    Keywords: Cancer Care Facilities/*organization & administration ; History, 20th Century ; Humans ; Male
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 159
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    OSI investigator "reined in" (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-07-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hamilton, D P -- New York, N.Y. -- Science. 1991 Jul 26;253(5018):372.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1862335" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome ; Hiv ; Humans ; National Institutes of Health (U.S.)/*organization & administration ; Research/*standards ; *Scientific Misconduct ; United States ; United States Dept. of Health and Human Services/organization & administration
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  • 160
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    How peptide hormones get ready for work (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J -- New York, N.Y. -- Science. 1991 May 10;252(5007):779-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1674172" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Gene Expression Regulation, Enzymologic ; Hormones/*metabolism ; Mice ; Neurotransmitter Agents/metabolism ; Pro-Opiomelanocortin/metabolism ; Proprotein Convertase 2 ; Proprotein Convertases ; Protein Precursors/metabolism ; *Protein-Tyrosine Kinases ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-fes ; Serine Endopeptidases/*physiology
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  • 161
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    Function of the homeodomain protein GHF1 in pituitary cell proliferation (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-07-12
    Description: Mutations that cause pituitary dwarfism in the mouse reside in the gene encoding the transcription factor growth hormone factor 1 (GHF1 or pit1). These dwarf mice (dw and dwJ) are deficient in growth hormone (GH) and prolactin (PRL) synthesis and exhibit pituitary hypoplasia, suggesting a stem cell defect. With antisense oligonucleotide technology, a cell culture model of this genetic defect was developed. Specific inhibition of GHF1 synthesis by complementary oligonucleotides led to a marked decrease in GH and PRL expression and to a marked decrease in proliferation of somatotrophic cell lines. These results provide direct evidence that the homeodomain protein GHF1 is required not only for the establishment and maintenance of the differentiated phenotype but for cell proliferation as well.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Castrillo, J L -- Theill, L E -- Karin, M -- DK38527/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1991 Jul 12;253(5016):197-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, School of Medicine, University of California, San Diego, La Jolla 92093.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1677216" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antisense Elements (Genetics) ; Base Sequence ; *Cell Division ; Cells, Cultured ; DNA/biosynthesis ; DNA-Binding Proteins/*physiology ; Dwarfism/genetics ; Gene Expression Regulation ; *Genes, Homeobox ; Growth Hormone/genetics ; In Vitro Techniques ; Mice ; Molecular Sequence Data ; Pituitary Gland/*cytology/physiology ; Prolactin/genetics ; Transcription Factor Pit-1 ; Transcription Factors/*physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 162
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    ACh receptor-rich membrane domains organized in fibroblasts by recombinant 43-kildalton protein (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-01
    Description: Neurotransmitter receptors are generally clustered in the postsynaptic membrane. The mechanism of clustering was analyzed with fibroblast cell lines that were stably transfected with the four subunits for fetal (alpha, beta, gamma, delta) or adult (alpha, beta, epsilon, delta) type mouse muscle nicotinic acetylcholine receptors (AChRs). Immunofluorescent staining indicated that AChRs were dispersed on the surface of these cells. When transiently transfected with an expression construct encoding a 43-kilodalton protein that is normally concentrated under the postsynaptic membrane, AChRs expressed in these cells became aggregated in large cell-surface clusters, colocalized with the 43-kilodalton protein. This suggests that 43-kilodalton protein can induce AChR clustering and that cluster induction involves direct contact between AChR and 43-kilodalton protein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Phillips, W D -- Kopta, C -- Blount, P -- Gardner, P D -- Steinbach, J H -- Merlie, J P -- R01 NS022356/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1991 Feb 1;251(4993):568-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Washington University School of Medicine, St. Louis, MO 63110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1703661" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/pharmacology ; Animals ; Cell Membrane/physiology ; Fetus ; Fibroblasts/cytology/physiology ; Fluorescent Antibody Technique ; Ion Channels/drug effects/physiology ; Macromolecular Substances ; Mice ; Molecular Weight ; Muscles/physiology ; Receptors, Nicotinic/analysis/genetics/*physiology ; Recombinant Proteins/analysis/metabolism ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 163
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    Cloning and expression of a cocaine-sensitive rat dopamine transporter (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-25
    Description: The action of dopamine and other monoamine neurotransmitters at synapses is terminated predominantly by high-affinity reuptake into presynaptic terminals by specific sodium-dependent neurotransmitter transport proteins. A complementary DNA encoding a rat dopamine transporter has been isolated that exhibits high sequence similarity with the previously cloned norepinephrine and gamma-aminobutyric acid transporters. Transient expression of the complementary DNA in HeLa cells confirms the cocaine sensitivity of this transporter.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kilty, J E -- Lorang, D -- Amara, S G -- New York, N.Y. -- Science. 1991 Oct 25;254(5031):578-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Yale University, New Haven, CT 06510.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948035" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Carrier Proteins/drug effects/*genetics/metabolism ; Cloning, Molecular ; Cocaine/*pharmacology ; Dopamine/*metabolism ; Dopamine Plasma Membrane Transport Proteins ; Gene Expression ; HeLa Cells ; Humans ; Kinetics ; *Membrane Glycoproteins ; *Membrane Transport Proteins ; Molecular Sequence Data ; *Nerve Tissue Proteins ; Oligodeoxyribonucleotides ; Polymerase Chain Reaction/methods ; Rats ; Sequence Homology, Nucleic Acid ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 164
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    Protection against malaria by vaccination with sporozoite surface protein 2 plus CS protein (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-03
    Description: The circumsporozoite (CS) protein has been the target for development of malaria sporozoite vaccines for a decade. However, immunization with subunit vaccines based on the CS protein has never given the complete protection found after immunization with irradiated sporozoites. BALB/c mice immunized with irradiated Plasmodium yoelii sporozoites produced antibodies and cytotoxic T cells against a 140-kilodalton protein, sporozoite surface protein 2 (SSP2). Mice immunized with P815 cells that had been transfected with either SSP2 or CS genes were partially protected, and those immunized with a mixture of SSP2 and CS transfectants were completely protected against malaria. These studies emphasize the importance of vaccine delivery systems in achieving protection and define a multi-antigen sporozoite vaccine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Khusmith, S -- Charoenvit, Y -- Kumar, S -- Sedegah, M -- Beaudoin, R L -- Hoffman, S L -- New York, N.Y. -- Science. 1991 May 3;252(5006):715-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Malaria Program, Naval Medical Research Institute, Bethesda, MD 20889.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1827210" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/immunology ; Antibodies, Protozoan/immunology ; Antigens, Protozoan/genetics/*immunology ; Immunization ; Malaria/*prevention & control ; Mice ; Mice, Inbred BALB C ; Molecular Weight ; Plasmodium yoelii/*immunology ; Protozoan Proteins/genetics/*immunology ; *Protozoan Vaccines ; T-Lymphocytes, Cytotoxic/immunology ; T-Lymphocytes, Helper-Inducer/immunology ; T-Lymphocytes, Regulatory/immunology ; Transfection ; *Vaccination
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 165
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    Mutation identified as a possible cause of Alzheimer's disease (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J -- New York, N.Y. -- Science. 1991 Feb 22;251(4996):876-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1900373" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*genetics ; Amyloid beta-Peptides/*genetics ; Amyloid beta-Protein Precursor ; Chromosomes, Human, Pair 21 ; Cloning, Molecular ; Humans ; *Mutation ; Protein Precursors/*genetics
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  • 166
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    In vitro and in vivo consequences of VLA-2 expression on rhabdomyosarcoma cells (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-29
    Description: Cloned integrin alpha 2 subunit complementary DNA was expressed on human rhabdomyosarcoma (RD) cells to give a functional VLA-2 (alpha 2 beta 1) adhesion receptor. The VLA-2-positive RDA2 cells not only showed increased adhesion to collagen and laminin in vitro, but also formed substantially more metastatic tumor colonies in nude mice after either intravenous or subcutaneous injection. These results show that a specific adhesion receptor (VLA-2) can markedly enhance both experimental and spontaneous metastasis. In contrast to the metastasis results, there was no difference in either the in vitro growth rate or apparent in vivo tumorigenicity of RD and RDA2 cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chan, B M -- Matsuura, N -- Takada, Y -- Zetter, B R -- Hemler, M E -- CA 37393/CA/NCI NIH HHS/ -- GM 38903/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Mar 29;251(5001):1600-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2011740" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Adhesion ; Cell Line ; Collagen ; Fibronectins ; Humans ; Kinetics ; Laminin ; Lung Neoplasms/pathology/secondary ; Mice ; Mice, Nude ; Neoplasm Metastasis ; Neoplasm Transplantation ; Receptors, Very Late Antigen/genetics/*physiology ; Rhabdomyosarcoma/*pathology ; Transplantation, Heterologous
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 167
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    The medial temporal lobe memory system (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-09-20
    Description: Studies of human amnesia and studies of an animal model of human amnesia in the monkey have identified the anatomical components of the brain system for memory in the medial temporal lobe and have illuminated its function. This neural system consists of the hippocampus and adjacent, anatomically related cortex, including entorhinal, perirhinal, and parahippocampal cortices. These structures, presumably by virtue of their widespread and reciprocal connections with neocortex, are essential for establishing long-term memory for facts and events (declarative memory). The medial temporal lobe memory system is needed to bind together the distributed storage sites in neocortex that represent a whole memory. However, the role of this system is only temporary. As time passes after learning, memory stored in neocortex gradually becomes independent of medial temporal lobe structures.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Squire, L R -- Zola-Morgan, S -- MH24600/MH/NIMH NIH HHS/ -- NS19063/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1991 Sep 20;253(5026):1380-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Veterans Affairs Medical Center, San Diego, CA 92161.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1896849" target="_blank"〉PubMed〈/a〉
    Keywords: Amnesia/physiopathology ; Amygdala/physiology ; Animals ; Brain/*physiology ; Brain Mapping ; Cerebral Cortex/physiology ; Hippocampus/physiology ; Humans ; Memory/*physiology ; Temporal Lobe/*physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Improvements seen for RU-486 abortions (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maurice, J -- New York, N.Y. -- Science. 1991 Oct 11;254(5029):198, 200.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1925574" target="_blank"〉PubMed〈/a〉
    Keywords: *Abortion, Induced ; Female ; Humans ; Internationality ; Mifepristone/*therapeutic use ; Pregnancy ; Pregnant Women ; *Risk Assessment
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    Resistance to ddI and sensitivity to AZT induced by a mutation in HIV-1 reverse transcriptase (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-09-27
    Description: Serial human immunodeficiency virus type-1 (HIV-1) isolates were obtained from five individuals with acquired immunodeficiency syndrome (AIDS) who changed therapy to 2',3'-dideoxyinosine (ddI) after at least 12 months of treatment with 3'-azido-3'-deoxythymidine (zidovudine, AZT). The in vitro sensitivity to ddI decreased during the 12 months following ddI initiation, whereas AZT sensitivity increased. Analysis of the reverse transcriptase coding region revealed a mutation associated with reduced sensitivity to ddI. When this mutation was present in the same genome as a mutation known to confer AZT resistance, the isolates showed increased sensitivity to AZT. Analysis of HIV-1 variants confirmed that the ddI resistance mutation alone conferred ddI and 2',3'-dideoxycytidine resistance, and suppressed the effect of the AZT resistance mutation. The use of combination therapy for HIV-1 disease may prevent drug-resistant isolates from emerging.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉St Clair, M H -- Martin, J L -- Tudor-Williams, G -- Bach, M C -- Vavro, C L -- King, D M -- Kellam, P -- Kemp, S D -- Larder, B A -- New York, N.Y. -- Science. 1991 Sep 27;253(5027):1557-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Virology, Burroughs Wellcome Co., Research Triangle Park, NC 27709.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1716788" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*drug therapy/microbiology ; Base Sequence ; DNA, Viral/*genetics ; Didanosine/*pharmacology/*therapeutic use ; Drug Resistance, Microbial ; Genotype ; HIV-1/*drug effects/enzymology/isolation & purification ; Humans ; Molecular Sequence Data ; *Mutation ; Oligodeoxyribonucleotides ; RNA-Directed DNA Polymerase/*genetics/metabolism ; Zidovudine/pharmacology/*therapeutic use
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Related RNA polymerase-binding regions in human RAP30/74 and Escherichia coli sigma 70 (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-23
    Description: RAP30/74 is a heteromeric general transcription initiation factor that binds to mammalian RNA polymerase II. The RAP30 subunit contains a region that is similar in amino acid sequence to the RNA polymerase-binding domain of the Escherichia coli transcription initiation factor sigma 70 (sigma 70). Mammalian RNA polymerase II specifically protected a serine residue in the sigma 70-related region of RAP30 from phosphorylation in vitro. In addition, human RAP30/74 bound to Escherichia coli RNA polymerase and was displaced by sigma 70. These results suggest that RAP30 and sigma 70 have functionally related RNA polymerase-binding regions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCracken, S -- Greenblatt, J -- New York, N.Y. -- Science. 1991 Aug 23;253(5022):900-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Banting and Best Department of Medical Research, University of Toronto, Ontario, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1652156" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Centrifugation, Density Gradient ; Cyanogen Bromide ; Cyclic AMP/pharmacology ; Escherichia coli/*analysis/enzymology ; Humans ; Molecular Sequence Data ; Peptide Fragments/chemistry/metabolism ; Phosphorylation ; Protein Kinases/metabolism ; RNA Polymerase II/*metabolism ; Sigma Factor/chemistry/*metabolism ; Transcription Factors/chemistry/*metabolism ; *Transcription Factors, TFII ; Trypsin
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    Artificial heart development: a long effort (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harrell, G T -- New York, N.Y. -- Science. 1991 Nov 1;254(5032):630-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948039" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biomedical Engineering ; *Heart, Artificial ; Humans
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Interaction of the IL-2 receptor with the src-family kinase p56lck: identification of novel intermolecular association (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-06-14
    Description: In the interleukin-2 (IL-2) system, intracellular signal transduction is triggered by the beta chain of the IL-2 receptor (IL-2R beta); however, the responsible signaling mechanism remains unidentified. Evidence for the formation of a stable complex of IL-2R beta and the lymphocyte-specific protein tyrosine kinase p56lck is presented. Specific association sites were identified in the tyrosine kinase catalytic domain of p56lck and in the cytoplasmic domain of IL-2R beta. As a result of interaction, IL-2R beta became phosphorylated in vitro by p56lck. Treatment of T lymphocytes with IL-2 promotes p56lck kinase activity. These data suggest the participation of p56lck as a critical signaling molecule downstream of IL-2R via a novel interaction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hatakeyama, M -- Kono, T -- Kobayashi, N -- Kawahara, A -- Levin, S D -- Perlmutter, R M -- Taniguchi, T -- New York, N.Y. -- Science. 1991 Jun 14;252(5012):1523-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Molecular and Cellular Biology, Osaka University, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2047859" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Antigens, CD/immunology ; Base Sequence ; Binding Sites ; Cell Division/drug effects ; Cell Line ; Humans ; Interleukin-2/pharmacology ; Killer Cells, Natural/cytology/drug effects/immunology ; Lymphocyte Activation ; Lymphocyte Specific Protein Tyrosine Kinase p56(lck) ; Lymphocytes/drug effects/*immunology ; Macromolecular Substances ; Molecular Sequence Data ; Molecular Weight ; Oligonucleotide Probes ; Protein-Tyrosine Kinases/genetics/isolation & purification/*metabolism ; Receptors, Interleukin-2/genetics/isolation & purification/*physiology ; *Signal Transduction ; Transfection
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    Three Europeans find their own road to fame (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Nov 22;254(5035):1116-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1957163" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle ; Europe ; Gene Expression Regulation ; History, 20th Century ; Humans ; Neoplasms/etiology/*physiopathology ; Oncogenic Viruses/pathogenicity
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  • 174
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    Deregulation of a homeobox gene, HOX11, by the t(10;14) in T cell leukemia (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-07-05
    Description: Molecular cloning of the t(10;14)(q24;q11) recurrent breakpoint of T cell acute lymphoblastic leukemia has demonstrated a transcript for the candidate gene TCL3. Characterization of this gene from chromosome segment 10q24 revealed it to be a new homeobox, HOX11. The HOX11 homeodomain is most similar to that of the murine gene Hlx and possesses a markedly glycine-rich variable region and an acidic carboxyl terminus. HOX11, while expressed in liver, was not detected in normal thymus or T cells. This lineage-restricted homeobox gene is deregulated upon translocation into the T cell receptor locus where it may act as an oncogene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hatano, M -- Roberts, C W -- Minden, M -- Crist, W M -- Korsmeyer, S J -- 1 PO1 CA49712/CA/NCI NIH HHS/ -- CA 21765/CA/NCI NIH HHS/ -- CA 30969/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 Jul 5;253(5015):79-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Washington University School of Medicine, St. Louis, MO 63110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1676542" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Blotting, Northern ; Chromosomes, Human, Pair 10 ; Chromosomes, Human, Pair 14 ; Cloning, Molecular ; *Gene Expression Regulation, Neoplastic ; *Genes, Homeobox ; Humans ; Leukemia-Lymphoma, Adult T-Cell/*genetics ; Mice ; Molecular Sequence Data ; Receptors, Antigen, T-Cell/genetics ; Restriction Mapping ; Sequence Homology, Nucleic Acid ; *Translocation, Genetic
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    Recognition of self antigens by skin-derived T cells with invariant gamma delta antigen receptors (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-06-07
    Description: Thy-1+ dendritic epidermal T cells (dECs) express invariant gamma delta antigen receptors and are found in intimate contact with keratinocytes in murine epidermis--thus raising the possibility that keratinocytes express a ligand for the antigen receptor of these T cells. Thy-1+ dECs were stimulated to produce lymphokines by interaction with keratinocytes in vitro. This stimulation was mediated through the dEC antigen receptor and did not appear to be restricted by the major histocompatibility complex. Thus, dECs can recognize self antigens and may participate in immune surveillance for cellular damage rather than for foreign antigens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Havran, W L -- Chien, Y H -- Allison, J P -- AI26942/AI/NIAID NIH HHS/ -- CA40041/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 Jun 7;252(5011):1430-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley 94720.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1828619" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoantigens/*immunology ; Cell Line ; Dendrites/immunology ; Epidermis ; *Immunity, Cellular ; In Vitro Techniques ; Interleukin-2/secretion ; Keratinocytes/physiology ; Mice ; Mice, Inbred BALB C ; Receptors, Antigen, T-Cell/*physiology ; Receptors, Antigen, T-Cell, gamma-delta ; T-Lymphocytes/*immunology
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    Cuban AIDS control (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-10
    Description: In an item on a "dog genome project" (Science, 19 April, p. 382), we failed to say that while Eric Lander of MIT and David Botstein of Stanford University developed methods for mapping the genes for complex traits, the test of the method on tomatoes was done (with Lander's collaboration) at Steven D. Tanksley's lab at Cornell University.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 May 10;252(5007):775.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2028252" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*prevention & control ; Humans ; Mass Screening ; Quarantine
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    Selective activation of the B natriuretic peptide receptor by C-type natriuretic peptide (CNP) (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-04-05
    Description: The natriuretic peptides are hormones that can stimulate natriuretic, diuretic, and vasorelaxant activity in vivo, presumably through the activation of two known cell surface receptor guanylyl cyclases (ANPR-A and ANPR-B). Although atrial natriuretic peptide (ANP) and, to a lesser extent, brain natriuretic peptide (BNP) are efficient activators of the ANPR-A guanylyl cyclase, neither hormone can significantly stimulate ANPR-B. A member of this hormone family, C-type natriuretic peptide (CNP), potently and selectively activated the human ANPR-B guanylyl cyclase. CNP does not increase guanosine 3',5'-monophosphate accumulation in cells expressing human ANPR-A. The affinity of CNP for ANPR-B is 50- or 500-fold higher than ANP or BNP, respectively. This ligand-receptor pair may be involved in the regulation of fluid homeostasis by the central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koller, K J -- Lowe, D G -- Bennett, G L -- Minamino, N -- Kangawa, K -- Matsuo, H -- Goeddel, D V -- New York, N.Y. -- Science. 1991 Apr 5;252(5002):120-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Genentech, Inc., South San Francisco 94080.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1672777" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atrial Natriuretic Factor/*physiology ; Cells, Cultured ; Cercopithecus aethiops ; Cloning, Molecular ; Dose-Response Relationship, Drug ; Guanylate Cyclase/metabolism ; Humans ; Natriuretic Peptide, Brain ; Natriuretic Peptide, C-Type ; Nerve Tissue Proteins/*pharmacology ; Receptors, Atrial Natriuretic Factor ; Receptors, Cell Surface/*physiology ; Recombinant Proteins ; Signal Transduction
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    New hope for vaccine against schistosomiasis (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cherfas, J -- New York, N.Y. -- Science. 1991 Feb 8;251(4994):630-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1992516" target="_blank"〉PubMed〈/a〉
    Keywords: Antigens, Helminth/immunology ; Glutathione Transferase/immunology ; Humans ; Schistosomiasis/*prevention & control ; Triose-Phosphate Isomerase/immunology ; Vaccines, Synthetic
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    Flying into the future (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koshland, D E Jr -- New York, N.Y. -- Science. 1991 Oct 11;254(5029):173.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1925565" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Drosophila melanogaster/genetics ; Genome ; Genome, Human ; *Human Genome Project ; Humans
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  • 180
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    Longitudinal studies of effects of divorce on children in Great Britain and the United States (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-06-07
    Description: National, longitudinal surveys from Great Britain and the United States were used to investigate the effects of divorce on children. In both studies, a subsample of children who were in two-parent families during the initial interview (at age 7 in the British data and at ages 7 to 11 in the U.S. data) were followed through the next interview (at age 11 and ages 11 to 16, respectively). At both time points in the British data, parents and teachers independently rated the children's behavior problems, and the children were given reading and mathematics achievement tests. At both time points in the U.S. data, parents rated the children's behavior problems. Children whose parents divorced or separated between the two time points were compared to children whose families remained intact. For boys, the apparent effect of separation or divorce on behavior problems and achievement at the later time point was sharply reduced by considering behavior problems, achievement levels, and family difficulties that were present at the earlier time point, before any of the families had broken up. For girls, the reduction in the apparent effect of divorce occurred to a lesser but still noticeable extent once preexisting conditions were considered.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cherlin, A J -- Furstenberg, F F Jr -- Chase-Lansdale, L -- Kiernan, K E -- Robins, P K -- Morrison, D R -- Teitler, J O -- HD25936/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1991 Jun 7;252(5011):1386-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Sociology, Johns Hopkins University, Baltimore, MD 21218.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2047851" target="_blank"〉PubMed〈/a〉
    Keywords: Achievement ; Adolescent ; Child ; Child Behavior ; Divorce/*psychology ; England ; Female ; Humans ; Longitudinal Studies ; Male ; United States
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    Fertility, health, and consanguineous marriages (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hedrick, P -- New York, N.Y. -- Science. 1991 Dec 6;254(5037):1434-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1810291" target="_blank"〉PubMed〈/a〉
    Keywords: *Consanguinity ; *Fertility ; Gene Frequency ; Health ; Humans
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    PCBs in the environment (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-11-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Nov 15;254(5034):919-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948073" target="_blank"〉PubMed〈/a〉
    Keywords: *Environmental Pollutants ; Humans ; Polychlorinated Biphenyls/*toxicity
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  • 183
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    Name of the game? (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-09-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fox, C H -- New York, N.Y. -- Science. 1991 Sep 6;253(5024):1075.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1887232" target="_blank"〉PubMed〈/a〉
    Keywords: *Ethics, Professional ; Female ; Humans ; Laboratories/organization & administration ; Male ; Research Support as Topic ; Scientific Misconduct ; United States
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    A heparin-binding growth factor secreted by macrophage-like cells that is related to EGF (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-22
    Description: Macrophage-like U-937 cells secrete a 22-kilodalton heparin-binding growth factor that is mitogenic for BALB-3T3 fibroblasts and smooth muscle cells, but not endothelial cells. The amino acid sequence predicted from complementary DNA clones indicates that the mitogen is a new member of the epidermal growth factor (EGF) family. This heparin-binding EGF-like growth factor (HB-EGF) binds to EGF receptors on A-431 epidermoid carcinoma cells and smooth muscle cells, but is a far more potent mitogen for smooth muscle cells than is EGF. HB-EGF is also expressed in cultured human macrophages and may be involved in macrophage-mediated cellular proliferation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Higashiyama, S -- Abraham, J A -- Miller, J -- Fiddes, J C -- Klagsbrun, M -- CA37392/CA/NCI NIH HHS/ -- CA45548/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 Feb 22;251(4996):936-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Surgical Research, Children's Hospital, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1840698" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cell Division/drug effects ; Cell Line ; Chromatography, Affinity ; Chromatography, High Pressure Liquid ; DNA Replication/drug effects ; Epidermal Growth Factor/genetics/isolation & ; purification/*metabolism/pharmacology ; Growth Substances/*metabolism ; Heparin/*metabolism ; Humans ; Kinetics ; Macrophages/*metabolism ; Molecular Sequence Data ; Protein Binding ; Receptor, Epidermal Growth Factor/metabolism ; Sequence Homology, Nucleic Acid
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Carcinogens and human health: Part 2 (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-01-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rall, D P -- New York, N.Y. -- Science. 1991 Jan 4;251(4989):10-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1986406" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carcinogenicity Tests/standards ; Carcinogens/*toxicity ; Humans ; National Institutes of Health (U.S.) ; Neoplasms/*chemically induced ; *Toxicology ; United States
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 186
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    Expression cDNA cloning of the KGF receptor by creation of a transforming autocrine loop (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-01-04
    Description: An expression cloning strategy was devised to isolate the keratinocyte growth factor (KGF) receptor complementary DNA. NIH/3T3 fibroblasts, which secrete this epithelial cell-specific mitogen, were transfected with a keratinocyte expression complementary DNA library. Among several transformed foci identified, one demonstrated the acquisition of specific high-affinity KGF binding sites. The pattern of binding competition by related fibroblast growth factors (FGFs) indicated that this receptor had high affinity for acidic FGF as well as KGF. The rescued 4.2-kilobase complementary DNA was shown to encode a predicted membrane-spanning tyrosine kinase related to but distinct from the basic FGF receptor. This expression cloning approach may be generally applicable to the isolation of genes that constitute limiting steps in mitogenic signaling pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miki, T -- Fleming, T P -- Bottaro, D P -- Rubin, J S -- Ron, D -- Aaronson, S A -- New York, N.Y. -- Science. 1991 Jan 4;251(4989):72-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Cellular and Molecular Biology, National Cancer Institute, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1846048" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding, Competitive ; Cell Line ; *Cloning, Molecular ; DNA/*genetics ; Fibroblast Growth Factor 10 ; Fibroblast Growth Factor 7 ; Fibroblast Growth Factors/metabolism ; Fibroblasts/metabolism ; *Gene Expression ; Growth Substances/metabolism ; Mice ; Molecular Sequence Data ; Nucleic Acid Hybridization ; Plasmids ; Receptor, Fibroblast Growth Factor, Type 2 ; Receptors, Cell Surface/*genetics/metabolism ; *Receptors, Fibroblast Growth Factor ; Recombinant Proteins/metabolism ; Transfection ; Transformation, Genetic
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 187
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    Targets for dioxin: genes for plasminogen activator inhibitor-2 and interleukin-1 beta (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-10-18
    Description: Dioxin (2,3,7,8-tetrachlorodibenzo-p-dioxin, TCDD), a widespread environmental contaminant, may elicit its effects by altering gene expression in susceptible cells. Five TCDD-responsive complementary DNA clones were isolated from a human keratinocyte cell line. One of these clones encodes plasminogen activator inhibitor-2, a factor that influences growth and differentiation by regulating proteolysis of the extracellular matrix. Another encodes the cytokine interleukin-1 beta. Thus, TCDD alters the expression of growth regulatory genes and has effects similar to those of other tumor-promoting agents that affect both inflammation and differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sutter, T R -- Guzman, K -- Dold, K M -- Greenlee, W F -- New York, N.Y. -- Science. 1991 Oct 18;254(5030):415-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Chemical Industry Institute of Toxicology, Research Triangle Park, NC 27709.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1925598" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Blood Physiological Phenomena ; Blotting, Northern ; Calcium/pharmacology ; Cell Line ; Cloning, Molecular ; Cycloheximide/pharmacology ; Gene Expression Regulation/drug effects ; Humans ; Interleukin-1/*genetics ; *Plasminogen Inactivators ; RNA, Messenger/drug effects ; Tetrachlorodibenzodioxin/*pharmacology ; Transcription, Genetic/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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  • 188
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    Solution structure of FKBP, a rotamase enzyme and receptor for FK506 and rapamycin (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-10
    Description: Immunophilins, when complexed to immunosuppressive ligands, appear to inhibit signal transduction pathways that result in exocytosis and transcription. The solution structure of one of these, the human FK506 and rapamycin binding protein (FKBP), has been determined by nuclear magnetic resonance (NMR). FKBP has a previously unobserved antiparallel beta-sheet folding topology that results in a novel loop crossing and produces a large cavity lined by a conserved array of aromatic residues; this cavity serves as the rotamase active site and drug-binding pocket. There are other significant structural features (such as a protruding positively charged loop and an apparently flexible loop) that may be involved in the biological activity of FKBP.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Michnick, S W -- Rosen, M K -- Wandless, T J -- Karplus, M -- Schreiber, S L -- GM-30804/GM/NIGMS NIH HHS/ -- GM-38627/GM/NIGMS NIH HHS/ -- I-S10-RR04870/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1991 May 10;252(5007):836-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Harvard University, Cambridge, MA 02138.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1709301" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-Bacterial Agents/metabolism ; Binding Sites ; Carrier Proteins/*ultrastructure ; Crystallography ; Humans ; Immunosuppressive Agents/metabolism ; Magnetic Resonance Spectroscopy ; Molecular Structure ; Polyenes/metabolism ; Sirolimus ; Tacrolimus ; Tacrolimus Binding Proteins
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  • 189
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    Form, motion, and binocular rivalry (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ramachandran, V S -- New York, N.Y. -- Science. 1991 Feb 22;251(4996):950-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology, University of California, San Diego, La Jolla 92093-0109.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2000497" target="_blank"〉PubMed〈/a〉
    Keywords: Brain/physiology ; Humans ; *Motion Perception ; *Vision, Binocular ; *Visual Fields
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 190
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    Crystal structure of defensin HNP-3, an amphiphilic dimer: mechanisms of membrane permeabilization (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-22
    Description: Defensins (molecular weight 3500 to 4000) act in the mammalian immune response by permeabilizing the plasma membranes of a broad spectrum of target organisms, including bacteria, fungi, and enveloped viruses. The high-resolution crystal structure of defensin HNP-3 (1.9 angstrom resolution, R factor 0.19) reveals a dimeric beta sheet that has an architecture very different from other lytic peptides. The dimeric assembly suggests mechanisms by which defensins might bind to and permeabilize the lipid bilayer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hill, C P -- Yee, J -- Selsted, M E -- Eisenberg, D -- New York, N.Y. -- Science. 1991 Mar 22;251(5000):1481-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Eisenberg, Molecular Biology Institute, Los Angeles, CA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2006422" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Blood Proteins/chemistry/*ultrastructure ; Cell Membrane Permeability ; Crystallography ; Defensins ; Guinea Pigs ; Humans ; Macromolecular Substances ; Membrane Proteins/chemistry/ultrastructure ; Models, Molecular ; Molecular Sequence Data ; Molecular Structure ; Protein Conformation ; Rabbits ; Rats ; Structure-Activity Relationship ; X-Ray Diffraction ; *alpha-Defensins
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 191
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    A unique lab design fits the British to a tea (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-07-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, A -- New York, N.Y. -- Science. 1991 Jul 26;253(5018):377-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1862338" target="_blank"〉PubMed〈/a〉
    Keywords: Developmental Biology ; Employment ; Facility Design and Construction ; Foreign Professional Personnel ; Great Britain ; Humans ; *Laboratories ; Neoplasms ; *Research ; United States
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  • 192
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    Requirement of heparan sulfate for bFGF-mediated fibroblast growth and myoblast differentiation (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-06-21
    Description: Basic fibroblast growth factor (bFGF) binds to heparan sulfate proteoglycans at the cell surface and to receptors with tyrosine kinase activity. Prevention of binding between cell surface heparan sulfate and bFGF (i) substantially reduces binding of fibroblast growth factor to its cell-surface receptors, (ii) blocks the ability of bFGF to support the growth of Swiss 3T3 fibroblasts, and (iii) induces terminal differentiation of MM14 skeletal muscle cells, which is normally repressed by fibroblast growth factor. These results indicate that cell surface heparan sulfate is directly involved in bFGF cell signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rapraeger, A C -- Krufka, A -- Olwin, B B -- 5T32H007118/PHS HHS/ -- AR39467/AR/NIAMS NIH HHS/ -- HD21881/HD/NICHD NIH HHS/ -- R01 AR039467/AR/NIAMS NIH HHS/ -- R01 HD021881/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1991 Jun 21;252(5013):1705-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, University of Wisconsin, Madison 53706.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1646484" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation ; Cell Division ; Cell Line ; Chlorates/pharmacology ; Fibroblast Growth Factor 2/*metabolism ; Fibroblasts/*cytology ; Heparitin Sulfate/*physiology ; In Vitro Techniques ; Mice ; Muscles/*cytology ; Polysaccharide-Lyases/pharmacology ; Protein Binding ; Receptors, Cell Surface/metabolism ; Structure-Activity Relationship
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 193
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    Multiple representations of pain in human cerebral cortex (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-03-15
    Description: The representation of pain in the cerebral cortex is less well understood than that of any other sensory system. However, with the use of magnetic resonance imaging and positron emission tomography in humans, it has now been demonstrated that painful heat causes significant activation of the contralateral anterior cingulate, secondary somatosensory, and primary somatosensory cortices. This contrasts with the predominant activation of primary somatosensory cortex caused by vibrotactile stimuli in similar experiments. Furthermore, the unilateral cingulate activation indicates that this forebrain area, thought to regulate emotions, contains an unexpectedly specific representation of pain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Talbot, J D -- Marrett, S -- Evans, A C -- Meyer, E -- Bushnell, M C -- Duncan, G H -- New York, N.Y. -- Science. 1991 Mar 15;251(4999):1355-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire de neurophysiologie comportementale, Faculte de medecine dentaire, Universite de Montreal, Quebec, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2003220" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Anxiety/physiopathology ; Brain Mapping ; Cerebral Cortex/*physiology ; Functional Laterality ; Hot Temperature ; Humans ; Magnetic Resonance Imaging ; Male ; Pain/*physiopathology ; Tomography, Emission-Computed
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  • 194
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    Networks for thinking in cliques? (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-08-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, A -- New York, N.Y. -- Science. 1991 Aug 2;253(5019):506.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1857979" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome ; *Computers ; Equipment Design ; Humans ; Periodicals as Topic ; Publishing ; *Research ; *Thinking
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  • 195
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    Mapping of DNA instability at the fragile X to a trinucleotide repeat sequence p(CCG)n (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-06-21
    Description: The sequence of a Pst I restriction fragment was determined that demonstrate instability in fragile X syndrome pedigrees. The region of instability was localized to a trinucleotide repeat p(CCG)n. The sequence flanking this repeat were identical in normal and affected individuals. The breakpoints in two somatic cell hybrids constructed to break at the fragile site also mapped to this repeat sequence. The repeat exhibits instability both when cloned in a nonhomologous host and after amplification by the polymerase chain reaction. These results suggest variation in the trinucleotide repeat copy number as the molecular basis for the instability and possibly the fragile site. This would account for the observed properties of this region in vivo and in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kremer, E J -- Pritchard, M -- Lynch, M -- Yu, S -- Holman, K -- Baker, E -- Warren, S T -- Schlessinger, D -- Sutherland, G R -- Richards, R I -- New York, N.Y. -- Science. 1991 Jun 21;252(5013):1711-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cytogenetics and Molecular Genetics, Adelaide Children's Hospital, South Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1675488" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Blotting, Southern ; Chromosome Mapping ; Fragile X Syndrome/*genetics ; Humans ; Molecular Sequence Data ; Pedigree ; Polymerase Chain Reaction ; Polymorphism, Restriction Fragment Length ; Repetitive Sequences, Nucleic Acid ; Restriction Mapping ; X Chromosome/ultrastructure
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  • 196
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    Cadherin cell adhesion receptors as a morphogenetic regulator (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-03-22
    Description: Cadherins are a family of cell adhesion receptors that are crucial for the mutual association of vertebrate cells. Through their homophilic binding interactions, cadherins play a role in cell-sorting mechanisms, conferring adhesion specificities on cells. The regulated expression of cadherins also controls cell polarity and tissue morphology. Cadherins are thus considered to be important regulators of morphogenesis. Moreover, pathological examinations suggest that the down-regulation of cadherin expression is associated with the invasiveness of tumor cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takeichi, M -- New York, N.Y. -- Science. 1991 Mar 22;251(5000):1451-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biophysics, Faculty of Science, Kyoto University, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2006419" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/pathology ; Animals ; Cadherins/*physiology ; Calcium/physiology ; *Cell Adhesion ; Cytoskeleton/physiology ; Humans ; *Morphogenesis ; Neoplasm Metastasis ; Stomach Neoplasms/pathology
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  • 197
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    Faculty retirement (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-08-02
    Description: I would like to point out several errors of citation at the end of my article ;;Cocaine addiction: Psychology and neuropsychology'' (29 Mar., p. 1580). In the References and Notes, reference 42 was missing. It should have read, ;;42. T. Kosten et al., in preparation.'' Also in the References and Notes, reference 44 should have been numbered 43. In the text, citation 43 should have been numbered 41. In figure 3, the attribution was missing. It should have read, ;;Reprinted with permission from T. Kosten et al. (42).''〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Friedman, P J -- New York, N.Y. -- Science. 1991 Aug 2;253(5019):494.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1857973" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Databases, Bibliographic ; *Faculty ; Faculty, Medical ; Government Agencies ; Humans ; *Retirement ; United States
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  • 198
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    Oh, for a normal brain! (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-11-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Nov 1;254(5032):648.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948043" target="_blank"〉PubMed〈/a〉
    Keywords: Autopsy ; Brain/anatomy & histology/pathology/*physiology ; Female ; Humans ; Middle Aged ; Reference Values
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  • 199
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    IQ and heredity (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-04-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Apr 12;252(5003):191-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2011756" target="_blank"〉PubMed〈/a〉
    Keywords: Genetics ; Humans ; *Intelligence ; Twins, Monozygotic
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  • 200
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    Demonstration that CFTR is a chloride channel by alteration of its anion selectivity (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-07-12
    Description: Expression of the cystic fibrosis transmembrane conductance regulator (CFTR) generates adenosine 3',5'-monophosphate (cAMP)-regulated chloride channels, indicating that CFTR is either a chloride channel or a chloride channel regulator. To distinguish between these possibilities, basic amino acids in the putative transmembrane domains were mutated. The sequence of anion selectivity of cAMP-regulated channels in cells containing either endogenous or recombinant CFTR was bromide greater than chloride greater than iodide greater than fluoride. Mutation of the lysines at positions 95 or 335 to acidic amino acids converted the selectivity sequence to iodide greater than bromide greater than chloride greater than fluoride. These data indicate that CFTR is a cAMP-regulated chloride channel and that lysines 95 and 335 determine anion selectivity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, M P -- Gregory, R J -- Thompson, S -- Souza, D W -- Paul, S -- Mulligan, R C -- Smith, A E -- Welsh, M J -- New York, N.Y. -- Science. 1991 Jul 12;253(5016):202-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Internal Medicine, University of Iowa College of Medicine, Iowa City 52242.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1712984" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Chloride Channels ; Chlorides/*physiology ; Cyclic AMP/physiology ; Cystic Fibrosis/physiopathology ; Cystic Fibrosis Transmembrane Conductance Regulator ; DNA Mutational Analysis ; Electric Conductivity ; HeLa Cells ; Humans ; In Vitro Techniques ; Ion Channels/genetics/*physiology ; Membrane Glycoproteins/genetics/physiology ; Membrane Potentials ; Membrane Proteins/genetics/*physiology ; Molecular Sequence Data ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    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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