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  • American Association for the Advancement of Science (AAAS)  (21,793)
  • 1985-1989  (10,976)
  • 1980-1984  (10,817)
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Year
  • 1
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    Two forms of autosomal chronic granulomatous disease lack distinct neutrophil cytosol factors (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-12-02
    Description: Chronic granulomatous diseases of childhood (CGD) are a group of disorders of phagocytic cell superoxide (O2.-) production (respiratory burst). Anion exchange chromatography separated from normal neutrophil cytosol a 47-kilodalton neutrophil cytosol factor, NCF-1, that restored activity to defective neutrophil cytosol from most patients with autosomally inherited CGD in a cell-free O2.--generating system. A 65-kilodalton factor, NCF-2, restored activity to defective neutrophil cytosol from one patient with autosomal CGD. NCF-1, NCF-2, and a third cytosol fraction, NCF-3, were inactive alone or in pairs, but together replaced unfractionated cytosol in cell-free O2.- generation. Neutrophils deficient in NCF-1, but not NCF-2, did not phosphorylate the 47-kilodalton protein. It is proposed that NCF-1, NCF-2, and NCF-3 are essential for generation of O2.- by phagocytic cells and that genetic abnormalities of these cytosol components can result in the CGD phenotype.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nunoi, H -- Rotrosen, D -- Gallin, J I -- Malech, H L -- New York, N.Y. -- Science. 1988 Dec 2;242(4883):1298-301.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Bacterial Diseases Section, National Institute of Allergy and Infectious Diseases, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2848319" target="_blank"〉PubMed〈/a〉
    Keywords: Blotting, Western ; Cell Membrane/metabolism ; Cytosol/metabolism ; Granulomatous Disease, Chronic/*metabolism ; Humans ; In Vitro Techniques ; Molecular Weight ; Neutrophils/*metabolism ; Phosphoproteins/metabolism ; Superoxides/*biosynthesis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 2
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    A "selfish" B chromosome that enhances its transmission by eliminating the paternal genome (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-04-22
    Description: In the parasitic wasp, Nasonia vitripennis, males are haploid and usually develop from unfertilized eggs, whereas females are diploid and develop from fertilized eggs. Some individuals in this species carry a genetic element, termed psr (paternal sex ratio), which is transmitted through sperm and causes condensation and subsequent loss of paternal chromosomes in fertilized eggs, thus converting diploid females into haploid males. In this report the psr trait was shown to be caused by a supernumerary chromosome. This B chromosome contains at least three repetitive DNA sequences that do not cross-hybridize to each other or to the host genome. The psr chromosome apparently produces a trans-acting product responsible for condensation of the paternal chromosomes, but is itself insensitive to the effect. Because the psr chromosome enhances its transmission by eliminating the rest of the genome, it can be considered the most "selfish" genetic element yet described.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nur, U -- Werren, J H -- Eickbush, D G -- Burke, W D -- Eickbush, T H -- GM31867/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1988 Apr 22;240(4851):512-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Rochester, NY 14627.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3358129" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chromosomes/*physiology ; Cloning, Molecular ; DNA, Satellite ; Diploidy ; Haploidy ; Hymenoptera/*genetics ; Molecular Sequence Data ; Repetitive Sequences, Nucleic Acid ; Sex Determination Analysis ; *Sex Ratio ; Wasps/*genetics
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  • 3
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    Crisis in biosystematics of arthropods (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-05-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oliver, J H Jr -- New York, N.Y. -- Science. 1988 May 20;240(4855):967.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3368789" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Arthropod Vectors ; Government Agencies ; Humans ; *Research Support as Topic ; United States
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  • 4
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    Protein carbon-13 spin systems by a single two-dimensional nuclear magnetic resonance experiment (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-05-13
    Description: By applying a two-dimensional double-quantum carbon-13 nuclear magnetic resonance experiment to a protein uniformly enriched to 26 percent carbon-13, networks of directly bonded carbon atoms were identified by virtue of their one-bond spin-spin couplings and were classified by amino acid type according to their particular single- and double-quantum chemical shift patterns. Spin systems of 75 of the 98 amino acid residues in a protein, oxidized Anabaena 7120 ferredoxin (molecular weight 11,000), were identified by this approach, which represents a key step in an improved methodology for assigning protein nuclear magnetic resonance spectra. Missing spin systems corresponded primarily to residues located adjacent to the paramagnetic iron-sulfur cluster.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oh, B H -- Westler, W M -- Darba, P -- Markley, J L -- RR02301/RR/NCRR NIH HHS/ -- RR02781/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1988 May 13;240(4854):908-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, College of Agricultural and Life Sciences, University of Wisconsin-Madison 53706.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3129784" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids ; Carbon Isotopes ; Cyanobacteria/analysis ; *Ferredoxins ; *Magnetic Resonance Spectroscopy ; Oxidation-Reduction ; Spectrum Analysis
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  • 5
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    Insecticidal activity and lectin homology of arcelin seed protein (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-04-08
    Description: Arcelin, a major seed protein discovered in wild beans (Phaseolus vulgaris), has toxic effects on an important bean bruchid pest, Zabrotes subfasciatus. Transfer of the arcelin-1 allele to bean cultivars and addition of purified arcelin to artificial seeds results in high levels of insect resistance. The nucleotide and derived amino acid sequences of the arcelin-1 complementary DNA are very similar to those of genes encoding the bean seed lectin, phytohemagglutinin. The gene or genes encoding arcelin may have evolved from a phytohemagglutinin gene or genes resulting in an effective mechanism for resistance to bean bruchids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Osborni, T C -- Alexander, D C -- Sun, S S -- Cardona, C -- Bliss, F A -- New York, N.Y. -- Science. 1988 Apr 8;240(4849):207-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17800917" target="_blank"〉PubMed〈/a〉
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  • 6
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    Reduction of naturally occurring motoneuron death in vivo by a target-derived neurotrophic factor (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-05-13
    Description: Treatment of chick embryos in ovo with crude and partially purified extracts from embryonic hindlimbs (days 8 to 9) during the normal cell death period (days 5 to 10) rescues a significant number of motoneurons from degeneration. The survival activity of partially purified extract was dose-dependent and developmentally regulated. The survival of sensory, sympathetic, parasympathetic, and a population of cholinergic sympathetic preganglionic neurons was unaffected by treatment with hindlimb extract. The massive motoneuron death that occurs after early target (hindlimb) removal was partially ameliorated by daily treatment with the hindlimb extract. These results indicate that a target-derived neurotrophic factor is involved in the regulation of motoneuron survival in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oppenheim, R W -- Haverkamp, L J -- Prevette, D -- McManaman, J L -- Appel, S H -- NS 20402/NS/NINDS NIH HHS/ -- NS 23058/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1988 May 13;240(4854):919-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy, Wake Forest University, Bowman Gray School of Medicine, Winston-Salem, NC 27103.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3363373" target="_blank"〉PubMed〈/a〉
    Keywords: Ammonium Sulfate ; Animals ; Cell Survival ; Chemical Fractionation ; Chick Embryo ; Growth Substances/isolation & purification/*pharmacology ; Hindlimb ; Motor Neurons/*cytology ; Muscles/analysis/embryology/innervation ; Nerve Growth Factors/pharmacology ; Tissue Extracts/isolation & purification/pharmacology
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  • 7
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    Transcription factor OTF-1 is functionally identical to the DNA replication factor NF-III (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-02
    Description: Octamer transcription factor-1 (OTF-1) and nuclear factor III (NF-III) are sequence-specific DNA binding proteins that activate transcription and DNA replication, respectively. It is shown here that OTF-1 is physically and biologically indistinguishable from NF-III. This conclusion is based on the following observations. First, the two proteins have identical mobilities by SDS-polyacrylamide gel electrophoresis. Second, OTF-1 binds to the adenovirus origin of DNA replication at the same site and with the same affinity as NF-III. Third, OTF-1 can substitute for NF-III in activating the initiation of adenovirus DNA replication in vitro. Fourth, the ability of OTF-1 to stimulate viral DNA replication is dependent on the presence of an intact NF-III binding site within the origin of replication. Fifth, NF-III can substitute for OTF-1 in activating in vitro transcription from the human histone H2b promoter. These data suggest the possibility that NF-III/OTF-1 is a protein that functions in both cellular DNA replication and transcription.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Neill, E A -- Fletcher, C -- Burrow, C R -- Heintz, N -- Roeder, R G -- Kelly, T J -- CA16519/CA/NCI NIH HHS/ -- CA42567/CA/NCI NIH HHS/ -- R0IGM32544/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1988 Sep 2;241(4870):1210-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Genetics, 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/3413485" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviridae/physiology ; DNA Replication/*drug effects ; DNA-Binding Proteins/metabolism/*pharmacology ; Electrophoresis, Polyacrylamide Gel ; HeLa Cells ; Histones/genetics ; Host Cell Factor C1 ; Humans ; Molecular Weight ; Nuclear Proteins/metabolism/*pharmacology ; Octamer Transcription Factor-1 ; Promoter Regions, Genetic ; Transcription Factors/metabolism/*pharmacology ; Transcription, Genetic/*drug effects ; Virus Replication/drug effects
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  • 8
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    A Chance to Retake TV Market? (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-10-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉P, R -- New York, N.Y. -- Science. 1988 Oct 7;242(4875):30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17757626" target="_blank"〉PubMed〈/a〉
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  • 9
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    Superstrings. A Theory of Everything? P. C. W. Davies and Julian Brown, Eds. Cambridge University Press, New York, 1988. viii, 234 pp., illus. $39.50; paper, $10.95. Based on a BBC radio broadcast (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-12-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ovrut, B -- New York, N.Y. -- Science. 1988 Dec 23;242(4885):1584-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17788424" target="_blank"〉PubMed〈/a〉
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  • 10
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    Amyloid protein precursor messenger RNAs: differential expression in Alzheimer's disease (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-08-26
    Description: In situ hybridization was used to assess total amyloid protein precursor (APP) messenger RNA and the subset of APP mRNA containing the Kunitz protease inhibitor (KPI) insert in 11 Alzheimer's disease (AD) and 7 control brains. In AD, a significant twofold increase was observed in total APP mRNA in nucleus basalis and locus ceruleus neurons but not in hippocampal subicular neurons, neurons of the basis pontis, or occipital cortical neurons. The increase in total APP mRNA in locus ceruleus and nucleus basalis neurons was due exclusively to an increase in APP mRNA lacking the KPI domain. These findings suggest that increased production of APP lacking the KPI domain in nucleus basalis and locus ceruleus neurons may play an important role in the deposition of cerebral amyloid that occurs in AD.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palmert, M R -- Golde, T E -- Cohen, M L -- Kovacs, D M -- Tanzi, R E -- Gusella, J F -- Usiak, M F -- Younkin, L H -- Younkin, S G -- 5T32GM07250/GM/NIGMS NIH HHS/ -- AG06656/AG/NIA NIH HHS/ -- MH43444/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1988 Aug 26;241(4869):1080-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neuropathology, Case Western Reserve University, School of Medicine, Cleveland, OH 44106.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2457949" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*genetics ; Amyloid/*genetics ; Bacteriophage lambda/genetics ; Brain/metabolism ; Cerebral Cortex/metabolism ; *Gene Expression Regulation ; Humans ; Locus Coeruleus/metabolism ; Neurons/metabolism ; Nucleic Acid Hybridization ; Operator Regions, Genetic ; Plasmids ; Protein Precursors/*genetics ; RNA/genetics ; RNA, Complementary ; RNA, Messenger/*genetics/metabolism ; Repressor Proteins/metabolism ; Transcription, Genetic ; Trypsin Inhibitors/genetics
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  • 11
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    Assembly of functional U1 and U2 human-amphibian hybrid snRNPs in Xenopus laevis oocytes (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-09
    Description: Oligonucleotides complementary to regions of U1 and U2 small nuclear RNAs (snRNAs), when injected into Xenopus laevis oocytes, rapidly induced the specific degradation of U1 and U2 snRNAs, respectively, and then themselves were degraded. After such treatment, splicing of simian virus 40 (SV40) late pre-mRNA transcribed from microinjected viral DNA was blocked in oocytes. If before introduction of SV40 DNA into oocytes HeLa cell U1 or U2 snRNAs were injected and allowed to assemble into small nuclear ribonucleoprotein particle (snRNP)-like complexes, SV40 late RNA was as efficiently spliced as in oocytes that did not receive U1 or U2 oligonucleotides. This demonstrates that oocytes can form fully functional hybrid U1 and U2 snRNPs consisting of human snRNA and amphibian proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pan, Z Q -- Prives, C -- CA33620/CA/NCI NIH HHS/ -- CA46121/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1988 Sep 9;241(4871):1328-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, Columbia University, New York, NY 10027.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2970672" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Humans ; Macromolecular Substances ; Oocytes ; *RNA Splicing ; *RNA, Small Nuclear ; *Ribonucleoproteins ; Ribonucleoproteins, Small Nuclear ; Species Specificity ; Structure-Activity Relationship ; Xenopus laevis
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  • 12
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    DNA amplification for direct detection of HIV-1 in DNA of peripheral blood mononuclear cells (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-01-15
    Description: By means of a selective DNA amplification technique called polymerase chain reaction, proviral sequences of the human immunodeficiency virus (HIV-1) were identified directly in DNA isolated from peripheral blood mononuclear cells (PBMCs) of persons seropositive but not in DNA isolated from PBMCs of persons seronegative for the virus. Primer pairs from multiple regions of the HIV-1 genome were used to achieve maximum sensitivity of provirus detection. HIV-1 sequences were detected in 100% of DNA specimens from seropositive, homosexual men from whom the virus was isolated by coculture, but in none of the DNA specimens from a control group of seronegative, virus culture-negative persons. However, HIV-1 sequences were detected in 64% of DNA specimens from seropositive, virus culture-negative homosexual men. This method of DNA amplification made it possible to obtain results within 3 days, whereas virus isolation takes up to 3 to 4 weeks. The method may therefore be used to complement or replace virus isolation as a routine means of determining HIV-1 infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ou, C Y -- Kwok, S -- Mitchell, S W -- Mack, D H -- Sninsky, J J -- Krebs, J W -- Feorino, P -- Warfield, D -- Schochetman, G -- New York, N.Y. -- Science. 1988 Jan 15;239(4837):295-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Infectious Diseases, Centers for Disease Control, Atlanta, GA 30333.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3336784" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*microbiology ; Base Sequence ; DNA, Viral/*blood ; DNA-Directed DNA Polymerase ; *Gene Amplification ; HIV/*genetics/isolation & purification ; HIV Seropositivity ; Homosexuality ; Humans ; Leukocytes, Mononuclear/*analysis ; Male ; Nucleic Acid Amplification Techniques ; Nucleic Acid Hybridization ; Virus Cultivation
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  • 13
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    Molecular cloning of odorant-binding protein: member of a ligand carrier family (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-07-15
    Description: Odorant-binding protein (OBP) is found in nasal epithelium, and it selectively binds odorants. Three complementary DNAs encoding rat odorant-binding protein have now been cloned and sequenced. One clone contains an open reading frame predicted to encode an 18,091-dalton protein. RNA blot analysis confirms the localization of OBP messenger RNA in the nasal epithelium. This OBP has 33 percent amino acid identity to alpha 2-microglobulin, a secreted plasma protein. Other members of an alpha 2-microglobulin superfamily bind and transport hydrophobic ligands. Thus, OBP probably binds and carries odorants within the nasal epithelium to putative olfactory receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pevsner, J -- Reed, R R -- Feinstein, P G -- Snyder, S H -- DA-00074/DA/NIDA NIH HHS/ -- GM-07626/GM/NIGMS NIH HHS/ -- P01 CA16519-13/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1988 Jul 15;241(4863):336-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, 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/3388043" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Carrier Proteins/*genetics ; Cloning, Molecular ; Ligands ; Membrane Proteins/*genetics ; Molecular Sequence Data ; Nasal Mucosa/*physiology ; Rats ; *Receptors, Odorant ; Smell/*physiology
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  • 14
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    Cooling, stopping, and trapping atoms (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-02-19
    Description: Significant advances have been made in the ability to control the motion of neutral atoms. Cooling and trapping atoms present new possibilities for studies of ultracold atoms and atomic interactions. The techniques of laser cooling and deceleration of atomic beams, magnetic and laser trapping of neutral atoms, and a number of recent advances in the use of radiative forces to manipulate atoms are reviewed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Phillips, W D -- Gould, P L -- Lett, P D -- New York, N.Y. -- Science. 1988 Feb 19;239(4842):877-83.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17759034" target="_blank"〉PubMed〈/a〉
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  • 15
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    Sea Surface Studies. A Global View. R. J. N. Devoy, Ed. Croom Helm, Beckenham, U.K., and Methuen, New York, 1987. xiv, 649 pp., illus. $95 (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-02-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pilkey, O H -- New York, N.Y. -- Science. 1988 Feb 12;239(4841):802.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17832947" target="_blank"〉PubMed〈/a〉
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  • 16
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    AIDS: an international perspective (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-02-05
    Description: The acquired immunodeficiency syndrome (AIDS) and infection with the human immunodeficiency virus type 1 (HIV-1) constitute a worldwide public health problem. Whereas in Europe and in most of the Americas transmission of HIV-1 has occurred predominantly among homosexual men and intravenous drug abusers, in Africa a distinct epidemiologic pattern has emerged that indicates that HIV-1 infection is mainly heterosexually acquired. Heterosexual transmission appears to be increasing in some parts of Latin America and the Caribbean, and possibly in the United States. In addition to HIV-1, at least one other human retrovirus, namely HIV-2, has been implicated as a cause of AIDS in Africa and Europe. Factors that influence heterosexual transmission of HIV-1 include genital ulcerations, early or late stages of HIV-1 infection in the index case, and possibly oral contraception and immune activation. The rate of perinatal transmission is enhanced when the mother's illness is more advanced. AIDS and HIV-1 infection may have a significant impact not only on public health, but also on the demography and socioeconomic conditions of some developing countries. Programs for the prevention and control of AIDS should be an immediate priority in all countries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Piot, P -- Plummer, F A -- Mhalu, F S -- Lamboray, J L -- Chin, J -- Mann, J M -- New York, N.Y. -- Science. 1988 Feb 5;239(4840):573-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Institute of Tropical Medicine, Antwerp, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3277271" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/epidemiology/prevention & ; control/*transmission ; Female ; HIV/classification/pathogenicity ; Humans ; Infant, Newborn ; Male ; Pregnancy ; Sexual Behavior
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    Superconductor rumor (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-12-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Dec 9;242(4884):1376.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17802126" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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    Harvard's blumenthal advises Dukakis (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-10-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Oct 14;242(4876):187.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3175647" target="_blank"〉PubMed〈/a〉
    Keywords: *Health ; Insurance, Health ; *Politics
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  • 19
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    Similar experiments, dissimilar results (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-10-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Oct 14;242(4876):192-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17787644" target="_blank"〉PubMed〈/a〉
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  • 20
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    When Crystals Collide: Grain Boundary Images: Internal interfaces in metals, ceramics and other materials strongly influence the properties of those substances. New work gives the best data to date on the atomic structure of such interfaces (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Sep 23;241(4873):1601-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17820888" target="_blank"〉PubMed〈/a〉
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  • 21
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    Du Pont Stakes Claim on Superconductor Rights: A fight looms over patent rights to the first high-temperature superconductor, as several companies hope to develop the material (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Sep 2;241(4870):1156.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17740768" target="_blank"〉PubMed〈/a〉
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  • 22
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    A Testable Theory of Superconductivity: New calculations from a theory based on magnetic interactions predict superconductors will never reach room temperature (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-10-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Oct 7;242(4875):31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17757627" target="_blank"〉PubMed〈/a〉
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  • 23
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    A bright sport on the solar scence (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-08-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Aug 19;241(4868):901.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17731433" target="_blank"〉PubMed〈/a〉
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  • 24
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    Trapping with optical tweezers (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-08-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Aug 26;241(4869):1042.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3045966" target="_blank"〉PubMed〈/a〉
    Keywords: *Lasers ; *Microbiological Techniques ; *Optics and Photonics
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  • 25
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    Was newton wrong? (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-08-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Aug 12;241(4867):789-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17829171" target="_blank"〉PubMed〈/a〉
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  • 26
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    Political Pressure Behind Dukakis Switch on Space: Congressional backers of the manned space station won a statement of strong support from presidential candidate Dukakis (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Sep 16;241(4872):1428.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17790032" target="_blank"〉PubMed〈/a〉
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  • 27
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    Wishbones on Display: X-ray movies made of European starlings as they flew in a wind tunnel uncovered some surprising details on how their skeletons move during flight (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-09-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Sep 16;241(4872):1430-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17790034" target="_blank"〉PubMed〈/a〉
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  • 28
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    Superconductor Credits Bypass Alabama: The critical contributions of researchers at the University of Alabama in Huntsville have been largely ignored as attention has been focused on Paul Chu's team at the University of Houston (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-08-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Aug 5;241(4866):655-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17839071" target="_blank"〉PubMed〈/a〉
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  • 29
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    Seeing chaos in a simple system (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-08-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Aug 12;241(4867):787-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17829170" target="_blank"〉PubMed〈/a〉
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  • 30
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    Turning down the heat on thin films (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-07-08
    Description: Superconducting thin films will be essential to any practical application of superconductivity to microelectronics. Scientists have now succeeded in putting these thin films onto silicon, which is the base element in most integrated circuits.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Jul 8;241(4862):163-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17841047" target="_blank"〉PubMed〈/a〉
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  • 31
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    Advances in measurement science (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-04-29
    Description: Year after year, physicists measure various quantities with increasing accuracy and see various objects in increasing detail. These advances are vital, because science's understanding of the physical world is necessarily limited by the accuracy with which science can measure that world. The Instrument and Measurement Science Topical Group of the American Physical Society sponsored several symposia at the recent APS March meeting in New Orleans that discussed recent advances in measurement and observation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Apr 29;240(4852):604-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17840902" target="_blank"〉PubMed〈/a〉
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  • 32
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    Near-field microscopes beat the wavelength limit (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-07-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Jul 1;241(4861):25-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3388017" target="_blank"〉PubMed〈/a〉
    Keywords: Microscopy/*instrumentation ; Optics and Photonics ; X-Rays
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  • 33
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    New Superconductors Come Through: High-temperature superconductors have proved difficult to put to practical use, but recent advances in thallium-and bismuth-based materials should bring applications closer to reality (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-06-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Jun 17;240(4859):1613-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17745212" target="_blank"〉PubMed〈/a〉
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  • 34
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    Discovery of sodium and potassium vapor in the atmosphere of the moon (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-08-05
    Description: Spectra of the region just above the bright limb of the Moon show weak emission features that are attributed to resonant scattering of sunlight from sodium and potassium vapor in the lunar atmosphere. The maximum omnidirectional emission flux above the bright limb is 3.8 +/- 0.4 kilorayleighs for sodium and 1.8 +/- 0.4 kiloray-leighs for potassium. The zenith column densities above the subsolar point are estimated to be 8 +/- 3 x 10(8) atoms cm(-2) for sodium 1.4 +/- 0.3 x 10(8) atoms cm(-2) for potassium. Corresponding surface densities are 67 +/- 12 atoms cm(-3) and 15 +/- 3 atoms cm(-3), respectively. The scale height for the sodium atmosphere is 120 +/- 42 kilometers, and for potassium 90 +/- 20 kilometers, which implies that the effective temperature of the sodium and potassium is close to the lunar surface temperature. The sodium density at the south polar region was found to be similar to that at the subsolar point, indicating wide-spread distribution of sodium vapor over the lunar surface. The ratio of the density of sodium to the density of potassium is (6 +/- 3) to 1, which is close to the sodium to potassium ratio in the lunar surface, suggesting that the atmosphere originates from the vaporization of surface minerals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Potter, A E -- Morgan, T H -- New York, N.Y. -- Science. 1988 Aug 5;241(4866):675-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17839078" target="_blank"〉PubMed〈/a〉
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  • 35
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    Novel types of microscopes (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-04-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Apr 29;240(4852):605.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3363349" target="_blank"〉PubMed〈/a〉
    Keywords: DNA/ultrastructure ; Microscopy/*instrumentation
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  • 36
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    New Superconductors Answer Some Questions: "Triple-digit" materials raise critical temperatures for superconductivity, may also yield important clues to understanding it (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-04-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pool, R -- New York, N.Y. -- Science. 1988 Apr 8;240(4849):146-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17800914" target="_blank"〉PubMed〈/a〉
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  • 37
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    Localization of cognitive operations in the human brain (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-06-17
    Description: The human brain localizes mental operations of the kind posited by cognitive theories. These local computations are integrated in the performance of cognitive tasks such as reading. To support this general hypothesis, new data from neural imaging studies of word reading are related to results of studies on normal subjects and patients with lesions. Further support comes from studies in mental imagery, timing, and memory.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Posner, M I -- Petersen, S E -- Fox, P T -- Raichle, M E -- HL 13851/HL/NHLBI NIH HHS/ -- NS 06833/NS/NINDS NIH HHS/ -- NS 14834/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1988 Jun 17;240(4859):1627-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, Washington University Medical Center, St. Louis, MO 63110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3289116" target="_blank"〉PubMed〈/a〉
    Keywords: Attention/physiology ; Brain/anatomy & histology/*physiology ; Cognition/*physiology ; Humans ; Imagination/physiology ; Memory/physiology ; Reading ; Tomography, Emission-Computed ; Vision, Ocular/physiology
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  • 38
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    The brain in AIDS: central nervous system HIV-1 infection and AIDS dementia complex (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-02-05
    Description: Infection with human immunodeficiency virus type 1 (HIV-1) is frequently complicated in its late stages by the AIDS dementia complex, a neurological syndrome characterized by abnormalities in cognition, motor performance, and behavior. This dementia is due partially or wholly to a direct effect of the virus on the brain rather than to opportunistic infection, but its pathogenesis is not well understood. Productive HIV-1 brain infection is detected only in a subset of patients and is confined largely or exclusively to macrophages, microglia, and derivative multinucleated cells that are formed by virus-induced cell fusion. Absence of cytolytic infection of neurons, oligodentrocytes, and astrocytes has focused attention on the possible role of indirect mechanisms of brain dysfunction related to either virus or cell-coded toxins. Delayed development of the AIDS dementia complex, despite both early exposure of the nervous system to HIV-1 and chronic leptomeningeal infection, indicates that although this virus is "neurotropic," it is relatively nonpathogenic for the brain in the absence of immunosuppression. Within the context of the permissive effect of immunosuppression, genetic changes in HIV-1 may underlie the neuropathological heterogeneity of the AIDS dementia complex and its relatively independent course in relation to the systemic manifestations of AIDS noted in some patients.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Price, R W -- Brew, B -- Sidtis, J -- Rosenblum, M -- Scheck, A C -- Cleary, P -- NS-19048/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1988 Feb 5;239(4840):586-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, Memorial Hospital, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3277272" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*pathology/psychology ; Brain/*microbiology/pathology ; Central Nervous System/*microbiology/pathology ; Dementia/*etiology ; Humans
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  • 39
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    Helix signals in proteins (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-06-17
    Description: The alpha helix, first proposed by Pauling and co-workers, is a hallmark of protein structure, and much effort has been directed toward understanding which sequences can form helices. The helix hypothesis, introduced here, provides a tentative answer to this question. The hypothesis states that a necessary condition for helix formation is the presence of residues flanking the helix termini whose side chains can form hydrogen bonds with the initial four-helix greater than N-H groups and final four-helix greater than C-O groups; these eight groups would otherwise lack intrahelical partners. This simple hypothesis implies the existence of a stereochemical code in which certain sequences have the hydrogen-bonding capacity to function as helix boundaries and thereby enable the helix to form autonomously. The three-dimensional structure of a protein is a consequence of the genetic code, but the rules relating sequence to structure are still unknown. The ensuing analysis supports the idea that a stereochemical code for the alpha helix resides in its boundary residues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Presta, L G -- Rose, G D -- AG 06084/AG/NIA NIH HHS/ -- GM 29458/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1988 Jun 17;240(4859):1632-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry, Hershey Medical Center, Pennsylvania State University, Hershey 17033.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2837824" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Carboxypeptidases ; Carboxypeptidases A ; Cytochrome c Group ; Flavodoxin ; Humans ; Hydrogen Bonding ; Models, Chemical ; Molecular Sequence Data ; Muramidase ; Myoglobin ; Pancreatic Polypeptide ; Parvalbumins ; Plastocyanin ; *Protein Conformation ; Ribonucleases ; Scorpion Venoms ; Tetrahydrofolate Dehydrogenase ; Triose-Phosphate Isomerase ; Trypsin Inhibitors ; X-Ray Diffraction
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    Transient expression shows ligand gating and allosteric potentiation of GABAA receptor subunits (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-12-02
    Description: Human gamma-aminobutyric acid A (GABAA) receptor subunits were expressed transiently in cultured mammalian cells. This expression system allows the simultaneous characterization of ligand-gated ion channels by electrophysiology and by pharmacology. Thus, coexpression of the alpha and beta subunits of the GABAA receptor generated GABA-gated chloride channels and binding sites for GABAA receptor ligands. Channels consisting of only alpha or beta subunits could also be detected. These homomeric channels formed with reduced efficiencies compared to the heteromeric receptors. Both of these homomeric GABA-responsive channels were potentiated by barbiturate, indicating that sites for both ligand-gating and allosteric potentiation are present on receptors assembled from either subunit.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pritchett, D B -- Sontheimer, H -- Gorman, C M -- Kettenmann, H -- Seeburg, P H -- Schofield, P R -- New York, N.Y. -- Science. 1988 Dec 2;242(4883):1306-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Neuroendocrinology, ZMBH, University of Heidelberg, Federal Republic of Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2848320" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation ; Blotting, Northern ; Cells, Cultured ; Chloride Channels ; Chlorides/*physiology ; Cloning, Molecular ; Electric Conductivity ; Humans ; Macromolecular Substances ; Membrane Proteins/*physiology ; Muscimol/metabolism ; Receptors, GABA-A/*physiology/ultrastructure ; Structure-Activity Relationship ; Transfection
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    Accelerated electron transfer between metal complexes mediated by DNA (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-09-23
    Description: DNA-mediated long-range electron transfer from photoexcited 1,10-phenanthroline complexes of ruthenium, Ru(phen)2(3)+, to isostructural complexes of cobalt(III), rhodium(III), and chromium(III) bound along the helical strand. The efficiency of transfer depended upon binding mode and driving force. For a given donor-acceptor pair, surface-bound complexes showed greater rate enhancements than those that were intercalatively bound. Even in rigid glycerol at 253 K, the rates for donor-acceptor pairs bound to DNA remained enhanced. For the series of acceptors, the greatest enhancement in electron-transfer rate was found with chromium, the acceptor of intermediate driving force. The DNA polymer appears to provide an efficient intervening medium to couple donor and acceptor metal complexes for electron transfer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Purugganan, M D -- Kumar, C V -- Turro, N J -- Barton, J K -- New York, N.Y. -- Science. 1988 Sep 23;241(4873):1645-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Columbia University, New York, NY 10027.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3420416" target="_blank"〉PubMed〈/a〉
    Keywords: Binding, Competitive ; DNA/*metabolism ; Diffusion ; Electron Transport ; Glycerol/metabolism ; Metals/*metabolism ; Models, Molecular ; Phenanthrolines/metabolism ; Ruthenium/metabolism ; Temperature ; Viscosity
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    Fidelity of HIV-1 reverse transcriptase (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-11-25
    Description: The human immunodeficiency virus type 1 (HIV-1) shows extensive genetic variation and undergoes rapid evolution. The fidelity of purified HIV-1 reverse transcriptase was measured during DNA polymerization in vitro by means of three different assays. Reverse transcriptase from HIV-1 introduced base-substitution errors in DNA from the bacteriophage phi X174 amber3 at estimated frequencies of 1/2000 to 1/4000. Analyses of misincorporation rates opposite a single template adenine residue showed that HIV-1 reverse transcriptase catalyzed nucleotide mismatches with a specificity of A:C much greater than A:G greater than A:A. The high error rate of HIV-1 reverse transcriptase in vitro translates to approximately five to ten errors per HIV-1 genome per round of replication in vivo. This high error rate suggests that misincorporation by HIV-1 reverse transcriptase is, at least in part, responsible for the hypermutability of the AIDS virus. The specificity of misincorporation may provide a basis for the systematic construction of antiviral nucleosides.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Preston, B D -- Poiesz, B J -- Loeb, L A -- CA-07263-03/CA/NCI NIH HHS/ -- N01AI72654/AI/NIAID NIH HHS/ -- R35-CA-39903/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1988 Nov 25;242(4882):1168-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, University of Washington, Seattle 98195.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2460924" target="_blank"〉PubMed〈/a〉
    Keywords: Avian Myeloblastosis Virus/enzymology ; Bacteriophage phi X 174/genetics ; DNA/*biosynthesis ; DNA Polymerase II/metabolism ; DNA, Viral/biosynthesis ; Electrophoresis, Polyacrylamide Gel ; HIV/*enzymology/genetics ; Kinetics ; Moloney murine leukemia virus/enzymology ; Mutation ; Nucleotides/metabolism ; RNA-Directed DNA Polymerase/*metabolism
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    Genetic relatedness in colonies of tropical wasps with multiple queens (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-11-25
    Description: The evolution of worker behavior in the social insects is usually explained by kin selection: although workers do not produce offspring, they do reproduce their genes by aiding the reproduction of relatives. The most difficult case for kin selection theory would be species in which workers are fully capable of reproducing but instead opt to rear brood of low relatedness. These conditions are perhaps best fulfilled by the swarm-founding wasps because they have little caste differentiation and their colonies usually have multiple queens, which should lower relatedness. Estimates of within-colony relatedness for three species in this group confirm that it is sometimes (but not always) very low. Inbreeding is negligible in these species, so the hypothesis that inbreeding may raise relatedness is not supported. The maintenance of worker behavior in such species is a significant challenge for kin selection theory.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Queller, D C -- Strassmann, J E -- Hughes, C R -- New York, N.Y. -- Science. 1988 Nov 25;242(4882):1155-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17799732" target="_blank"〉PubMed〈/a〉
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    Struggles and discovery: in praise of imperfection (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Purves, D -- New York, N.Y. -- Science. 1988 Sep 9;241(4871):1366.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17828941" target="_blank"〉PubMed〈/a〉
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    Characterization of a helical protein designed from first principles (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-08-19
    Description: The question of how the primary amino acid sequence of a protein determines its three-dimensional structure is still unanswered. One approach to this problem involves the de novo design of model peptides and proteins that should adopt desired three-dimensional structures. A systematic approach was aimed at the design of a four-helix bundle protein. The gene encoding the designed protein was synthesized and the protein was expressed in Escherichia coli and purified to homogeneity. The protein was shown to be monomeric, highly helical, and very stable to denaturation by guanidine hydrochloride (GuHCl). Thus a globular protein has been designed that is capable of adopting a stable, folded structure in aqueous solution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Regan, L -- DeGrado, W F -- New York, N.Y. -- Science. 1988 Aug 19;241(4868):976-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉E. I. du Pont de Nemours & Company, Central Research & Development Department, Wilmington, DE 19898.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3043666" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Chemical Phenomena ; Chemistry ; Chromatography, Gel ; Escherichia coli/genetics ; Molecular Sequence Data ; Plasmids ; *Protein Conformation ; *Proteins/genetics
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    Relman on Maddox (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-10-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Relman, A S -- New York, N.Y. -- Science. 1988 Oct 21;242(4877):348.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3175655" target="_blank"〉PubMed〈/a〉
    Keywords: Periodicals as Topic ; *Publishing ; Research/*standards ; United States
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    Neutron imaging of laser fusion targets (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-08-19
    Description: Along-term goal of inertial-confinement fusion research is the generation of energy by imploding capsules containing deuterium-tritium fuel. Progress in designing the capsules is aided by accurate imaging of the fusion burn. Penumbral coded-aperture techniques have been used to obtain neutron images that are a direct measurement of the fusion burn region in the capsules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ress, D -- Lerche, R A -- Ellis, R J -- Lane, S M -- Nugent, K A -- New York, N.Y. -- Science. 1988 Aug 19;241(4868):956-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17731445" target="_blank"〉PubMed〈/a〉
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    Cat research at Cornell (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-12-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rhodes, F H -- New York, N.Y. -- Science. 1988 Dec 9;242(4884):1361.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3201224" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Experimentation ; Animals ; Behavioral Research ; Bioethics ; *Cats ; Federal Government ; New York ; *Research ; Universities
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    Heat shock is lethal to fibroblasts microinjected with antibodies against hsp70 (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-10-21
    Description: Synthesis of a small group of highly conserved proteins in response to elevated temperature and other agents that induce stress is a universal feature of prokaryotic and eukaryotic cells. Although correlative evidence suggests that these proteins play a role in enhancing survival during and after stress, there is no direct evidence to support this in mammalian cells. To assess the role of the most highly conserved heat shock protein (hsp) family during heat shock, affinity-purified monoclonal antibodies to hsp70 were introduced into fibroblasts by needle microinjection. In addition to impairing the heat-induced translocation of hsp70 proteins into the nucleus after mild heat shock treatment, injected cells were unable to survive a brief incubation at 45 degrees C. Cells injected with control antibodies survived a similar heat shock. These results indicate that functional hsp70 is required for survival of these cells during and after thermal stress.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Riabowol, K T -- Mizzen, L A -- Welch, W J -- GM33551/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1988 Oct 21;242(4877):433-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, NY 11724.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3175665" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/administration & dosage ; Antigen-Antibody Complex ; Cell Survival ; Fibroblasts/cytology ; Heat-Shock Proteins/immunology/*physiology ; *Hot Temperature ; Microinjections ; Rats
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    Plaget's Construction of the Child's Reality. Susan Sugarman. Cambridge University Press, New York, 1987. vii, 258 pp. $34.50 (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-08-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reyna, V F -- Brainerd, C J -- New York, N.Y. -- Science. 1988 Aug 5;241(4866):733.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17839098" target="_blank"〉PubMed〈/a〉
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    Amino acid preferences for specific locations at the ends of alpha helices (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-06-17
    Description: A definition based on alpha-carbon positions and a sample of 215 alpha helices from 45 different globular protein structures were used to tabulate amino acid preferences for 16 individual positions relative to the helix ends. The interface residue, which is half in and half out of the helix, is called the N-cap or C-cap, whichever is appropriate. The results confirm earlier observations, such as asymmetrical charge distributions in the first and last helical turn, but several new, sharp preferences are found as well. The most striking of these are a 3.5:1 preference for Asn at the N-cap position, and a preference of 2.6:1 for Pro at N-cap + 1. The C-cap position is overwhelmingly dominated by Gly, which ends 34 percent of the helices. Hydrophobic residues peak at positions N-cap + 4 and C-cap - 4.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Richardson, J S -- Richardson, D C -- GM-15000/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1988 Jun 17;240(4859):1648-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Duke University, Durham, NC 27710.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3381086" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *Amino Acids ; Asparagine ; Hydrogen Bonding ; Proline ; *Protein Conformation
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    Panda conservation (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-11-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Robbins, C T -- Baer, J F -- Wright, R W -- Nelson, R J -- New York, N.Y. -- Science. 1988 Nov 11;242(4880):845.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3055297" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Zoo/*physiology ; Carnivora/*physiology ; Reproductive Techniques/*veterinary
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    Hard Choices Ahead on Biodiversity: With many species on the verge of extinction, biologists call for a quick and dirty survey to chart the biodiversity of the planet (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-09-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1988 Sep 30;241(4874):1759-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17783122" target="_blank"〉PubMed〈/a〉
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    U.N. Considers biodiversity convention (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1988 Sep 23;241(4873):1604.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17820891" target="_blank"〉PubMed〈/a〉
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    When the bamboo blooms (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-07-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1988 Jul 29;241(4865):531.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17774573" target="_blank"〉PubMed〈/a〉
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    Vietnam's psychological toll (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-07-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1988 Jul 8;241(4862):159-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3388027" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; Mental Disorders/epidemiology ; *Military Medicine ; *Veterans ; Vietnam
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    Beef and chocolate: a partial reprieve (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-05-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1988 May 27;240(4856):1149.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3375809" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cacao ; Cattle ; Dietary Fats/adverse effects ; *Meat ; *Plants, Edible ; Stearic Acids/physiology
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    Change in polio strategy? (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-05-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1988 May 27;240(4856):1145.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3375808" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; Poliomyelitis/*prevention & control ; Poliovirus Vaccine, Inactivated/*standards
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    Watson may head genome office (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-05-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1988 May 13;240(4854):878-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3363368" target="_blank"〉PubMed〈/a〉
    Keywords: *Administrative Personnel ; *Base Sequence ; *Chromosomes, Human ; *Genes ; Humans ; National Institutes of Health (U.S.)/*organization & administration ; Research Support as Topic/economics/legislation & jurisprudence ; United States
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    Fresh look at Acid rain (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-05-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1988 May 6;240(4853):715.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17741445" target="_blank"〉PubMed〈/a〉
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    Conservationists in Panda-monium: U.S zoos and conservationists tangle over the propriety of borrowing pandas--an endangered species--and exploiting them in highly lucrative exhibits (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-07-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1988 Jul 29;241(4865):529-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17774572" target="_blank"〉PubMed〈/a〉
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    Questions raised about anti-wrinkle cream (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-02-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1988 Feb 5;239(4840):564.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3277270" target="_blank"〉PubMed〈/a〉
    Keywords: Administration, Topical ; Aging ; Clinical Trials as Topic ; Double-Blind Method ; Humans ; Skin/*growth & development ; Tretinoin/administration & dosage/*therapeutic use
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    Academy backs genome project (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-02-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1988 Feb 12;239(4841 Pt 1):725-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3340854" target="_blank"〉PubMed〈/a〉
    Keywords: *Base Sequence ; *Chromosome Mapping ; *Chromosomes, Human ; Government Agencies ; Humans ; Societies, Scientific ; United States
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    Zeroing in on the sex switch (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-01-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1988 Jan 1;239(4835):21-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3336772" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; *Sex Determination Analysis ; X Chromosome ; Y Chromosome
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    Phosphatidylinositol-glycan anchors of membrane proteins: potential precursors of insulin mediators (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-04-22
    Description: BC3H1 myocytes release membrane-bound alkaline phosphatase to the incubation medium upon stimulation with insulin, following a time course that is consistent with the generation of dimyristoylglycerol and the appearance of a putative insulin mediator in the extracellular medium. The use of specific blocking agents shows, however, that alkaline phosphatase release and dimyristoylglycerol production are independent processes and that the blockade of either event inhibits the production of insulin mediator. These experiments suggest a new model of insulin action.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Romero, G -- Luttrell, L -- Rogol, A -- Zeller, K -- Hewlett, E -- Larner, J -- AI 18000/AI/NIAID NIH HHS/ -- AM 14334/AM/NIADDK NIH HHS/ -- AM 22125/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1988 Apr 22;240(4851):509-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, University of Virginia School of Medicine, Charlottesville 22908.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3282305" target="_blank"〉PubMed〈/a〉
    Keywords: Alkaline Phosphatase/metabolism/secretion ; Animals ; Diglycerides/metabolism ; Enzyme Activation/drug effects ; Extracellular Space/enzymology ; Glycolipids/*physiology ; In Vitro Techniques ; Insulin/*pharmacology ; Kinetics ; Membrane Glycoproteins/*physiology ; Phosphatidylinositols/*physiology ; Pyruvate Dehydrogenase Complex/metabolism
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    South african visa refusal (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-10-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rosendorff, C -- New York, N.Y. -- Science. 1988 Oct 28;242(4878):495.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17815879" target="_blank"〉PubMed〈/a〉
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    Grafting genetically modified cells to the damaged brain: restorative effects of NGF expression (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-12-16
    Description: Fibroblasts were genetically modified to secrete nerve growth factor (NGF) by infection with a retroviral vector and then implanted into the brains of rats that had surgical lesions of the fimbria-fornix. The grafted cells survived and produced sufficient NGF to prevent the degeneration of cholinergic neurons that would die without treatment. In addition, the protected cholinergic cells sprouted axons that projected in the direction of the cellular source of NGF. These results indicate that a combination of gene transfer and intracerebral grafting may provide an effective treatment for some disorders of the central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rosenberg, M B -- Friedmann, T -- Robertson, R C -- Tuszynski, M -- Wolff, J A -- Breakefield, X O -- Gage, F H -- AG06088/AG/NIA NIH HHS/ -- HD20034/HD/NICHD NIH HHS/ -- NS24279/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1988 Dec 16;242(4885):1575-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, University of California School of Medicine, La Jolla 92093.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3201248" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholinesterase/metabolism ; Animals ; Brain/cytology/enzymology/*pathology ; Cell Survival ; DNA/genetics ; Fibroblasts/metabolism/*transplantation ; Genetic Vectors ; Histocytochemistry ; Moloney murine leukemia virus/genetics ; Nerve Growth Factors/genetics/*physiology ; Rats
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    Chemical waves (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-04-22
    Description: Spatial structures may occur in nonlinear systems far from equilibrium. Chemical waves, which are concentration variations of chemical species propagating in a system, are an example of such structures. A survey is given of some experiments on chemical waves by spectroscopic and microphotographic techniques, arranged according to different types of waves, different geometries, and various properties.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ross, J -- Muller, S C -- Vidal, C -- New York, N.Y. -- Science. 1988 Apr 22;240(4851):460-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17784068" target="_blank"〉PubMed〈/a〉
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    Femtosecond clocking of the chemical bond (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-02
    Description: When a chemical bond is broken in a direct dissociation reaction, the process is so rapid that it has generally been considered instantaneous and thus unmeasurable. However, the bond does persist for times on the order of 10(-13) seconds after the photon has been absorbed. Femtosecond (10(-15) second) laser techniques can be used to directly clock this process, which describes the dynamics of the chemical bond. The time required to break the chemical bond in an elementary reaction has been measured and the characteristic repulsion length for the potential governing fragment separation has been obtained.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rosker, M J -- Dantus, M -- Zewail, A H -- New York, N.Y. -- Science. 1988 Sep 2;241(4870):1200-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17740784" target="_blank"〉PubMed〈/a〉
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    Binding of a cytosolic protein to the iron-responsive element of human ferritin messenger RNA (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-02
    Description: The human ferritin H chain messenger RNA contains a specific iron-responsive element (IRE) in its 5' untranslated region, which mediates regulation by iron of ferritin translation. An RNA gel retardation assay was used to demonstrate the affinity of a specific cytosolic binding protein for the IRE. A single-base deletion in the IRE eliminated both the interaction of the cytoplasmic protein with the IRE and translational regulation. Thus, the regulatory potential of the IRE correlates with its capacity to specifically interact with proteins. Titration curves of binding activity after treatment of cells with an iron chelator suggest that the factor acts as a repressor of ferritin translation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rouault, T A -- Hentze, M W -- Caughman, S W -- Harford, J B -- Klausner, R D -- New York, N.Y. -- Science. 1988 Sep 2;241(4870):1207-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cell Biology and Metabolism Branch, National Institute of Child Health and Human Development, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3413484" target="_blank"〉PubMed〈/a〉
    Keywords: Base Composition ; Binding, Competitive ; Carrier Proteins/*metabolism ; Cytosol/analysis ; Deferoxamine/pharmacology ; Ferritins/*genetics ; Globins/genetics ; Humans ; Iron/*pharmacology ; Liver/analysis ; *Nucleocytoplasmic Transport Proteins ; Protein Biosynthesis/drug effects ; RNA, Messenger/*metabolism ; *RNA-Binding Proteins
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    Gibberellins: a phytohormonal basis for heterosis in maize (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-09-02
    Description: Four commercially important maize parental inbreds and their 12 F(1) hybrids were studied to investigate the role of the phytohormone gibberellin (GA) in the regulation of heterosis (hybrid vigor). All hybrids grew faster than any inbred. In contrast, all inbreds showed a greater promotion of shoot growth after the exogenous application of GA(3). Concentrations of endogenous GA(1), the biological effector for shoot growth in maize, and GA(19), a precursor of GA(1), were measured in apical meristematic shoot cylinders for three of the inbreds and their hybrids by gas chromatography-mass spectrometry with selected ion monitoring; deuterated GAs were used as quantitative internal standards. In 34 of 36 comparisons, hybrids contained higher concentrations of endogenous GAs than their parental inbreds. Preferential growth acceleration of the inbreds by exogenous GA(3) indicates that a deficiency of endogenous GA limits the growth of the inbreds and is thus a cause of inbreeding depression. Conversely, the increased endogenous concentration of GA in the hybrids could provide a phytohormonal basis for heterosis for shoot growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rood, S B -- Buzzell, R I -- Mander, L N -- Pearce, D -- Pharis, R P -- New York, N.Y. -- Science. 1988 Sep 2;241(4870):1216-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17740785" target="_blank"〉PubMed〈/a〉
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    Recruitment dynamics in complex life cycles (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-09-16
    Description: Organisms living in the marine rocky intertidal zone compete for space. This, together with predation, physical disruption, and differing species tolerances to physiological stress, explains the structure of the ecological communities at some sites. At other sites the supply of larvae is limiting, and events in the offshore waters, such as wind-driven upwelling, explain the composition of intertidal communities. Whether the community ecology at a site is governed by adult-adult interactions within the site, or by limitations to the supply of larvae reaching the site, is determined by the regional pattern of circulation in the coastal waters. Models combining larval circulation with adult interactions can potentially forecast population fluctuations. These findings illustrate how processes in different ecological habitats are coupled.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roughgarden, J -- Gaines, S -- Possingham, H -- DE-FG03-85ER60362/DE/NIDCR NIH HHS/ -- NCA2-258/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1988 Sep 16;241(4872):1460-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, Stanford University, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11538249" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Ecology ; *Ecosystem ; Larva ; *Marine Biology ; *Models, Biological ; Pacific Ocean ; Plankton ; Population Dynamics ; Thoracica/*growth & development
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    Marxism and soviet science: science, philosophy, and human behavior in the soviet union (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-02-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DE George, R T -- New York, N.Y. -- Science. 1988 Feb 19;239(4842):923.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17759040" target="_blank"〉PubMed〈/a〉
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    Cellular transcription factors and regulation of IL-2 receptor gene expression by HTLV-I tax gene product (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-07-01
    Description: Expression of the interleukin-2 receptor (IL-2R alpha) gene is activated by the transcriptional activator protein, Tax (previously referred to as the tat gene product), encoded by the human T-cell leukemia virus (HTLV-I). Multiple protein binding sites for specific DNA-protein interactions were identified over the upstream IL-2R alpha transcriptional regulatory sequences. However, only one region, which includes the sequence motif GGGGAATCTCCC, was required for activation by both the tax gene product and mitogenic stimulation. Remarkably, this sequence also bound the nuclear factor NF kappa B, which is important for induction of kappa-immunoglobulin gene expression. A model is presented whereby regulation of cellular gene expression by the HTLV-I tax gene product occurs via an indirect mechanism that may involve a post-translational modification of preexistent cellular transcription factors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ruben, S -- Poteat, H -- Tan, T H -- Kawakami, K -- Roeder, R -- Haseltine, W -- Rosen, C A -- New York, N.Y. -- Science. 1988 Jul 1;241(4861):89-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Oncology, Roche Institute of Molecular Biology, Nutley, NJ 07110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2838905" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; Cell Line ; DNA/genetics/metabolism ; Deltaretrovirus/*genetics ; Gene Expression Regulation/*drug effects ; Gene Products, tat ; Immunoglobulin kappa-Chains/genetics ; Mutation ; Plasmids ; Promoter Regions, Genetic ; Receptors, Immunologic/*genetics ; Receptors, Interleukin-2 ; Regulatory Sequences, Nucleic Acid ; Transcription Factors/genetics/metabolism/*pharmacology
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    Journal prices (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-01-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ruschin, S -- New York, N.Y. -- Science. 1988 Jan 29;239(4839):451.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17838875" target="_blank"〉PubMed〈/a〉
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    Estimates of species duration (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-05-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Russell, M P -- Lindberg, D R -- New York, N.Y. -- Science. 1988 May 20;240(4855):969.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17731700" target="_blank"〉PubMed〈/a〉
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    Disruption of the nitrogen cycle in acidified lakes (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-06-10
    Description: Experimental acidification of two small soft-water lakes caused nitrification to cease at pH values of 5.4 to 5.7. The resulting blockage of the nitrogen cycle caused a progressive accumulation of amnonium. When the epermental acidification of one of the lakes was ended and the pH was raised to 5.4, nitrification resumed after a time lag of 1 year.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rudd, J W -- Kelly, C A -- Schindler, D W -- Turner, M A -- New York, N.Y. -- Science. 1988 Jun 10;240(4858):1515-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17798981" target="_blank"〉PubMed〈/a〉
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    Hair cell regeneration after acoustic trauma in adult Coturnix quail (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-06-24
    Description: Recovery of hair cells was studied at various times after acoustic trauma in adult quail. An initial loss of hair cells recovered to within 5 percent of the original number of cells. Tritium-labeled thymidine was injected after this acoustic trauma to determine if mitosis played a role in recovery of hair cells. Within 10 days of acoustic trauma, incorporation of [3H]thymidine was seen over the nuclei of hair cells and supporting cells in the region of initial hair cell loss. Thus, hair cell regeneration can occur after embryonic terminal mitosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ryals, B M -- Rubel, E W -- NS24522/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1988 Jun 24;240(4860):1774-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Audiology and Speech Pathology, Veterans Administration Medical Center, Richmond, VA 23249.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3381101" target="_blank"〉PubMed〈/a〉
    Keywords: Age Factors ; Animals ; Cell Division ; Coturnix ; DNA Replication ; Hair Cells, Auditory/*cytology/physiology ; Hearing Loss, Noise-Induced/*physiopathology ; Time Factors
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    Estimate of Foreign SSC Funds Draws Fire (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-03-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉S, M -- New York, N.Y. -- Science. 1988 Mar 25;239(4847):1482.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17772743" target="_blank"〉PubMed〈/a〉
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  • 80
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    Site-directed mutagenesis of two trans-regulatory genes (tat-III,trs) of HIV-1 (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-02-19
    Description: Point mutations were introduced into the overlapping trans-regulatory genes (tat-III and trs) of human immunodeficiency virus type 1 (HIV-1), and the mutants were evaluated for virus expression. The results showed that tat-III has a positive transacting role and is required for transcriptional activation. A chain terminating mutation early in the trs gene resulted in an increase in transcription of viral messenger RNA as measured by nuclear transcription experiments, but only one major species of viral messenger RNA (1.8 kilobases) was detected, and little or no viral structural proteins were made. Thus, the trs gene product is essential for expression of virus structural proteins but, at the same time, may have a negative trans-regulatory role in transcription. Cotransfection of the point mutant proviruses defective in tat or trs with each other or with a complementary DNA clone containing tat and trs sequences restored the normal transcription pattern and subsequent virus production.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sadaie, M R -- Benter, T -- Wong-Staal, F -- New York, N.Y. -- Science. 1988 Feb 19;239(4842):910-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Tumor Cell Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3277284" target="_blank"〉PubMed〈/a〉
    Keywords: Acetyltransferases/genetics ; Acquired Immunodeficiency Syndrome/immunology ; Animals ; Cell Line ; Chloramphenicol O-Acetyltransferase ; Codon ; DNA/genetics ; *Genes, Regulator ; *Genes, Viral ; HIV/*genetics ; Humans ; Immunosorbent Techniques ; *Mutation ; Plasmids ; RNA, Messenger/genetics ; RNA, Viral/genetics ; Transcription, Genetic ; Transfection
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  • 81
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    Expression of c-fos protein in brain: metabolic mapping at the cellular level (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-06-03
    Description: The proto-oncogene c-fos is expressed in neurons in response to direct stimulation by growth factors and neurotransmitters. In order to determine whether the c-fos protein (Fos) and Fos-related proteins can be induced in response to polysynaptic activation, rat hindlimb motor/sensory cortex was stimulated electrically and Fos expression examined immunohistochemically. Three hours after the onset of stimulation, focal nuclear Fos staining was seen in motor and sensory thalamus, pontine nuclei, globus pallidus, and cerebellum. Moreover, 24-hour water deprivation resulted in Fos expression in paraventricular and supraoptic nuclei. Fos immunohistochemistry therefore provides a cellular method to label polysynaptically activated neurons and thereby map functional pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sagar, S M -- Sharp, F R -- Curran, T -- EY05721/EY/NEI NIH HHS/ -- NS24666/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1988 Jun 3;240(4857):1328-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, University of California, San Francisco.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3131879" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*metabolism ; Cell Nucleus/metabolism ; Cerebellum/metabolism ; Cerebral Cortex/metabolism ; Electric Stimulation ; *Gene Expression Regulation ; Globus Pallidus/metabolism ; Hippocampus/metabolism ; Hypothalamus/metabolism ; Immunohistochemistry ; Motor Cortex/physiology ; Neurons/metabolism ; Pons/metabolism ; Proto-Oncogene Proteins/*genetics ; Proto-Oncogene Proteins c-fos ; Rats ; Thalamus/metabolism
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  • 82
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    Structural polymorphism in transmembrane channels (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-07-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Salemme, F R -- New York, N.Y. -- Science. 1988 Jul 8;241(4862):145, 230.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Central Research and Development Department of E.I. Du Pont de Nemours Inc., Wilmington, DE 19898.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2455343" target="_blank"〉PubMed〈/a〉
    Keywords: *Gramicidin ; *Ion Channels ; *Membrane Proteins
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  • 83
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    A fossil reptile embryo from the Middle Triassic of the Alps (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-02-12
    Description: The first nothosaur (Neusticosaurus sp.) embryo, one of the very few fossil embryos known, provides a rare glimpse at reproduction in extinct reptiles. The specimen from the southern Alpine Middle Triassic (about 230 million years ago) was recognized as an embryo in comparison with an exceptionally large and well-understood sample of juvenile and sexed adult Neusticosaurus sp. The skeleton shows many embryonic features and may well be the smallest fossil reptile known (body length 51 millimeters). It reached only 22% of mean adult length whereas modern reptiles of this size do not hatch before they reach about 30% of mean adult length. The question of ovipary versus vivipary in pachypleurosaurs is discussed in light of the embryo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sander, P M -- New York, N.Y. -- Science. 1988 Feb 12;239(4841 Pt 1):780-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Palaontologisches Institut und Museum, Universitat Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3340859" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone and Bones/anatomy & histology ; Embryo, Nonmammalian/anatomy & histology ; *Fossils ; Osteogenesis ; *Paleontology ; Reptiles/anatomy & histology/*embryology ; Switzerland
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  • 84
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    IRAS 14348-1447, an Ultraluminous Pair of Colliding, Gas-Rich Galaxies: The Birth of a Quasar? (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-02-05
    Description: Ground-based observations of the object IRAS 14348-1447, which was discovered with the Infrared Astronomical Satellite, show that it is an extremely luminous colliding galaxy system that emits more than 95 percent of its energy at far-infrared wavelengths. IRAS 14348-1447, which is receeding from the sun at 8 percent of the speed of light, has a bolometric luminosity more than 100 times larger than that of our galaxy, and is therefore as luminous as optical quasars. New optical, infrared, and spectroscopic measurements suggest that the dominant luminosity source is a dustenshrouded quasar. The fuel for the intense activity is an enormous supply of molecular gas. Carbon monoxide emission has been detected at a wavelength of 2.6 millimeters by means of a new, more sensitive receiver recently installed on the 12-meter telescope of the National Radio Astronomy Observatory. IRAS 14348-1447 is the most distant and luminous source of carbon monoxide line emission yet detected. The derived mass of interstellar molecular hydrogen is 6 x 10(10) solar masses. This value is approximately 20 times that of the molecular gas content of the Milky Way and is similar to the largest masses of atomic hydrogen found in galaxies. A large mass of molecular gas may be a prerequisite for the formation of quasars during strong galactic collisions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sanders, D B -- Scoville, N Z -- Soifer, B T -- New York, N.Y. -- Science. 1988 Feb 5;239(4840):625-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17759060" target="_blank"〉PubMed〈/a〉
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  • 85
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    Molecular crowding on the cell surface (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-01-01
    Description: Strong steric interactions among proteins on crowded living cell surfaces were revealed by measurements of the equilibrium spatial distributions of proteins in applied potential gradients. The fraction of accessible surface occupied by mobile surface proteins can be accurately represented by including steric exclusion in the statistical thermodynamic analysis of the data. The analyses revealed enhanced, concentration-dependent activity coefficients, implying unanticipated thermodynamic activity even at typical cell surface receptor concentrations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ryan, T A -- Myers, J -- Holowka, D -- Baird, B -- Webb, W W -- AI18306/AI/NIAID NIH HHS/ -- AI22449/AI/NIAID NIH HHS/ -- GM33028/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1988 Jan 1;239(4835):61-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, Cornell University, Ithaca, NY 14853.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2962287" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Membrane/*physiology ; *Membrane Fluidity ; Membrane Proteins/*physiology ; Rats ; Receptors, Fc/physiology ; Receptors, IgE ; Thermodynamics ; Tumor Cells, Cultured
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    The neural cell adhesion molecule (NCAM) as a regulator of cell-cell interactions (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-04-01
    Description: The neural cell adhesion molecule (NCAM) can influence a number of diverse intercellular events, including junctional communication, the association of axons with pathways and targets, and signals that alter levels of neurotransmitter enzymes. These pleiotropic effects appear to reflect the ability of NCAM to regulate membrane-membrane contact required to initiate specific interactions between other molecules. Such regulation can occur through changes in either NCAM expression or the molecule's content of polysialic acid (PSA). When NCAM with a low PSA content is expressed, adhesion is increased and contact-dependent events are triggered. In contrast, the large excluded volume of NCAM PSA can inhibit cell-cell interactions through hindrance of overall membrane apposition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rutishauser, U -- Acheson, A -- Hall, A K -- Mann, D M -- Sunshine, J -- EY06107/EY/NEI NIH HHS/ -- HD18369/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1988 Apr 1;240(4848):53-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Genetics and Anatomy, Case Western Reserve University School of Medicine, Cleveland, OH 44106.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3281256" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Surface/*physiology ; Cell Adhesion ; Cell Adhesion Molecules ; *Cell Communication ; Cell Membrane/physiology ; Membrane Glycoproteins/physiology ; Sialic Acids/metabolism
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  • 87
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    Localized dispersal and recruitment in great barrier reef corals: the helix experiment (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-03-18
    Description: To examine the problem of how far coral larvae disperse from their natal reef, coral recruitment densities were experimentally determined at distances up to 5 kilometers from a small, relatively isolated platform reef, Helix Reef, on the central Great Barrier Reef for 7 months. High concentrations of recruits, accounting for up to 40 percent of all recruitment, were found downstream of the reef in areas of high water residence time, suggesting that near-field(proximal) circulation has a profound influence on dispersal and recruitment of coral larvae. Coral recruitment declined logarithmically with distance from the reef, decreasing by an order of magnitude at radial distances of only 600 to 1200 meters. On an ecological time scale, advective dispersal of semipassive marine larvae with relatively short planktonic lives(minimally days) may be extensive, but success of recruitment is highly limited. Through evolutionary time, sufficient dispersal occurs to ensure gene flow to reef tracts hundreds or possibly thousands of kilometers apart. In the short term, however, coral reefs appear to be primarily self-seeded with respect to coral larvae.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sammarco, P W -- Andrews, J C -- New York, N.Y. -- Science. 1988 Mar 18;239(4846):1422-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17769738" target="_blank"〉PubMed〈/a〉
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  • 88
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    Peroxisomal membrane ghosts in Zellweger syndrome--aberrant organelle assembly (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-03-25
    Description: Peroxisomes are apparently missing in Zellweger syndrome; nevertheless, some of the integral membrane proteins of the organelle are present. Their distribution was studied by immunofluorescence microscopy. In control fibroblasts, peroxisomes appeared as small dots. In Zellweger fibroblasts, the peroxisomal membrane proteins were located in unusual empty membrane structures of larger size. These results suggest that the primary defect in this disease may be in the mechanism for import of matrix proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Santos, M J -- Imanaka, T -- Shio, H -- Small, G M -- Lazarow, P B -- AM19394/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1988 Mar 25;239(4847):1536-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Rockefeller University, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3281254" target="_blank"〉PubMed〈/a〉
    Keywords: Fibroblasts/analysis/ultrastructure ; Fluorescent Antibody Technique ; Genetic Diseases, Inborn/metabolism/*pathology ; Humans ; Intracellular Membranes/analysis/pathology ; Membrane Proteins/*analysis ; Microbodies/analysis/*pathology ; Organoids/analysis/pathology ; Syndrome
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    Clathrin: a matter of life or death? (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-02-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schekman, R -- Payne, G -- New York, N.Y. -- Science. 1988 Feb 19;239(4842):919.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3277285" target="_blank"〉PubMed〈/a〉
    Keywords: Clathrin/genetics/*physiology ; Mutation ; Saccharomyces cerevisiae/genetics/*physiology
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  • 90
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    Visualizing gene expression in time and space in the filamentous bacterium Streptomyces coelicolor (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-05-06
    Description: Streptomycetes are prokaryotic microorganisms that exhibit a complex, mycelial fungus-like cycle of morphological differentiation. Development involves at least two spatially separated types of cells: the branching hyphae of the substrate mycelium, which penetrate the stratum upon which the colony feeds, and the upwardly protruding hyphae of the aerial mycelium, which undergo metamorphosis into spores. The luciferase-encoding luxA and luxB operon of the luminescent marine bacterium Vibrio harveyi was used as a promoter probe to visualize gene expression in differentiating colonies of Streptomyces coelicolor. Promoters for developmental genes of several kinds gave distinctive temporal and spatial patterns of light emission.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schauer, A -- Ranes, M -- Santamaria, R -- Guijarro, J -- Lawlor, E -- Mendez, C -- Chater, K -- Losick, R -- New York, N.Y. -- Science. 1988 May 6;240(4853):768-72.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Developmental Biology, Harvard University, Cambridge, MA 02138.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3363358" target="_blank"〉PubMed〈/a〉
    Keywords: DNA, Bacterial/genetics ; DNA, Recombinant ; *Gene Expression Regulation ; Luciferases/genetics ; Luminescence ; Operon ; Plasmids ; Promoter Regions, Genetic ; Streptomyces/*genetics/growth & development ; Transformation, Bacterial ; Vibrio/genetics
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  • 91
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    cAMP evokes long-term facilitation in Aplysia sensory neurons that requires new protein synthesis (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-06-17
    Description: Behavioral sensitization leads to both short- and long-term enhancement of synaptic transmission between the sensory and motor neurons of the gill-withdrawal reflex in Aplysia. Serotonin (5-HT), a transmitter important for short-term sensitization, can evoke long-term enhancement of synaptic strength detected 1 day later. Because 5-HT mediates short-term facilitation through adenosine 3',5'-monophosphate (cAMP)-dependent protein phosphorylation, the role of cAMP in the long-term modulation of this identified synapse was examined. Like 5-HT, cAMP can also evoke long-term facilitation lasting 24 hours. Unlike the short-term change, the long-lasting change is blocked by anisomycin, a reversible inhibitor of protein synthesis, and therefore must involve the synthesis of gene products not required for the short-term change.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schacher, S -- Castellucci, V F -- Kandel, E R -- GM 32099/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1988 Jun 17;240(4859):1667-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Neurobiology and Behavior, Howard Hughes Medical Institute, College of Physicians and Surgeons of Columbia University, New York State Psychiatric Institute, NY 10032.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2454509" target="_blank"〉PubMed〈/a〉
    Keywords: 1-Methyl-3-isobutylxanthine/pharmacology ; Animals ; Anisomycin/pharmacology ; Aplysia/*physiology ; Cells, Cultured ; Cyclic AMP/analogs & derivatives/*pharmacology ; Evoked Potentials/drug effects ; Motor Neurons/physiology ; Neurons, Afferent/drug effects/*physiology ; *Protein Biosynthesis ; Serotonin/pharmacology ; Synapses/drug effects/physiology
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  • 92
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    Mammalian glucocorticoid receptor derivatives enhance transcription in yeast (1988)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1988-08-19
    Description: In mammalian cells, the glucocorticoid receptor binds specifically to glucocorticoid response element (GRE) DNA sequences and enhances transcription from linked promoters. It is shown here that derivatives of the glucocorticoid receptor also enhance transcription when expressed in yeast. Receptor-mediated enhancement in yeast was observed in fusions of GRE sequences to the yeast cytochrome c1 (CYC1) promoter; the CYC1 upstream activator sequences were not essential, since enhancement was observed in fusions of GREs to mutant CYC1 promoters retaining only the TATA region and transcription startpoints. It is concluded that the receptor operates by a common, highly conserved mechanism in yeast and mammalian cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schena, M -- Yamamoto, K R -- CA20535-12/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1988 Aug 19;241(4868):965-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Biophysics, University of California, San Francisco 94143.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3043665" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA/metabolism ; *Enhancer Elements, Genetic ; Gene Expression Regulation ; Immunoassay ; Plasmids ; Promoter Regions, Genetic ; Rats ; Receptors, Glucocorticoid/*genetics ; Saccharomyces cerevisiae/*genetics ; *Transcription, Genetic
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  • 93
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    Absence of linkage of chromosome 21q21 markers to familial Alzheimer's disease (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-16
    Description: Alzheimer's disease is the most common form of dementia among the elderly population. Although the etiology is unknown, inheritance plays a role in the pathogenesis of the disease. Recent work indicates that an autosomal dominant gene for Alzheimer's disease is located on chromosome 21 at band q21. In the present study of a group of autopsy-documented kindreds, no evidence for linkage was found between familial Alzheimer's disease (FAD) and chromosome 21q21 markers (D21S1/D21S72 and the amyloid beta gene). Linkage to the D21S1/D21S72 locus was excluded at recombination fractions (theta) up to 0.17. Linkage to the amyloid gene was excluded at theta = 0.10. Apparent recombinants were noted in two families for the amyloid gene and in five families for the D21S1/D21S72 locus. These data indicate that FAD is genetically heterogeneous.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schellenberg, G D -- Bird, T D -- Wijsman, E M -- Moore, D K -- Boehnke, M -- Bryant, E M -- Lampe, T H -- Nochlin, D -- Sumi, S M -- Deeb, S S -- AG 00057/AG/NIA NIH HHS/ -- AG 05136/AG/NIA NIH HHS/ -- GM 15253/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1988 Sep 16;241(4872):1507-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neurology, University of Washington, Seattle 98195.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3420406" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*genetics ; Chromosome Mapping ; *Chromosomes, Human, Pair 21 ; Genetic Linkage ; Humans
    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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  • 94
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    DNA looping (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-04-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schleif, R -- New York, N.Y. -- Science. 1988 Apr 8;240(4849):127-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Brandeis University, Waltham, Massachusetts 02254.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3353710" target="_blank"〉PubMed〈/a〉
    Keywords: DNA/*genetics ; DNA-Binding Proteins/physiology ; Eukaryotic Cells/physiology ; Gene Expression Regulation ; Nucleic Acid Conformation ; Prokaryotic Cells/physiology ; Regulatory Sequences, Nucleic Acid
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 95
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    Calpain II involvement in mitosis (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-05-13
    Description: Mitotic spindle disassembly requires major structural alterations in the associated cytoskeletal proteins and mitosis is known to be associated with Ca2+-sequestering phenomena and calcium transients. To examine the possible involvement of a ubiquitous Ca2+-activated protease, calpain II, in the mitotic process, synchronized PtK1 cells were monitored by immunofluorescence for the relocation of calpain II. The plasma membrane was the predominant location of calpain II in interphase. However, as mitosis progressed, calpain II relocated to (i) an association with mitotic chromosomes, (ii) a perinuclear location in anaphase, and (iii) a mid-body location in telophase. Microinjection of calpain II near the nucleus of a PtK1 cell promoted the onset of metaphase. Injection of calpain II at late metaphase promoted a precocious disassembly of the mitotic spindle and the onset of anaphase. These data suggest that calpain II is involved in mitosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schollmeyer, J E -- New York, N.Y. -- Science. 1988 May 13;240(4854):911-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉U.S. Department of Agriculture, Roman L. Hruska Meat Animal Research Center, Clay Center, NE 68933.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2834825" target="_blank"〉PubMed〈/a〉
    Keywords: Anaphase/drug effects ; Animals ; Calcium/pharmacology ; Calcium-Binding Proteins/pharmacology ; Calpain/antagonists & inhibitors/pharmacology/*physiology ; Cell Line ; Cell Membrane/enzymology ; Cell Nucleus/enzymology ; Chromosomes/metabolism ; Enzyme Activation ; Fluorescent Antibody Technique ; Fluorescent Dyes ; Interphase ; Metaphase/drug effects ; *Mitosis ; Muscles/enzymology ; Rhodamines ; Spindle Apparatus/drug effects ; Swine
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 96
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    Wildlife ecologist: aldo leopoid (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schrepfer, S R -- New York, N.Y. -- Science. 1988 Sep 2;241(4870):1237-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17740789" target="_blank"〉PubMed〈/a〉
    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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  • 97
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    Recent excitement in understanding transfer RNA identity (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-06-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schulman, L H -- Abelson, J -- New York, N.Y. -- Science. 1988 Jun 17;240(4859):1591-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology and Cancer, Albert Einstein College of Medicine, Bronx, New York 10461.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2454505" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids/genetics ; Anticodon ; Codon ; RNA, Bacterial/genetics ; RNA, Fungal/genetics ; *RNA, Transfer/genetics ; Suppression, Genetic
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 98
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    The interplay between chemistry and biology in the design of enzymatic catalysts (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-04-22
    Description: Chemists and biologists are focusing considerable effort on the development of efficient, highly selective catalysts for the synthesis or modification of complex molecules. Two approaches are described here, the generation of catalytic antibodies and hybrid enzymes, which exploit the binding and catalytic machinery of nature in catalyst design. Characterization of these systems is providing additional insight into the mechanisms of molecular recognition and catalysis which may, in turn, lead to the design of tailor-made catalysts for applications in chemistry, biology, and medicine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schultz, P G -- IRO1AI24695-01/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1988 Apr 22;240(4851):426-33.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, University of California, Berkeley 94720.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2833815" target="_blank"〉PubMed〈/a〉
    Keywords: *Antibodies ; Binding Sites, Antibody ; *Catalysis ; Chemical Phenomena ; *Chemistry ; DNA Mutational Analysis ; Endonucleases ; *Enzymes ; Recombinant Proteins ; Substrate Specificity
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 99
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    Biologically effective ultraviolet radiation: surface measurements in the United States, 1974 to 1985 (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-02-12
    Description: Recent reports of stratospheric ozone depletion have prompted concerns about the levels of solar ultraviolet radiation that reach the earth's surface. Since 1974 a network of ground-level monitoring stations in the United States has tracked measurements of biologically effective ultraviolet radiation (UVB, 290 to 330 nanometers). The fact that no increases of UVB have been detected at ground levels from 1974 to 1985 suggests that meteorological, climatic, and environmental factors in the troposphere may play a greater role in attenuating UVB radiation than was previously suspected.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scotto, J -- Cotton, G -- Urbach, F -- Berger, D -- Fears, T -- New York, N.Y. -- Science. 1988 Feb 12;239(4841 Pt 1):762-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biostatistics Branch, National Cancer Institute, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3340857" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; Melanoma/etiology ; Meteorological Concepts ; Neoplasms, Radiation-Induced/etiology ; Skin Neoplasms/etiology ; *Sunlight/adverse effects ; *Ultraviolet Rays ; 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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  • 100
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    Neural network programs: explorations in parallel distributed processing (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-08-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Segal, M M -- New York, N.Y. -- Science. 1988 Aug 26;241(4869):1107-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17747494" target="_blank"〉PubMed〈/a〉
    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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