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  • Chemistry  (10,474)
  • Biochemistry and Biotechnology  (670)
  • Life and Medical Sciences  (629)
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  • Humans  (564)
  • ASTROPHYSICS
  • 1995-1999  (11,670)
  • 1955-1959
  • 1996  (11,670)
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  • 1995-1999  (11,670)
  • 1955-1959
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  • 11
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balter, M -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):1988-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8984652" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-HIV Agents/*therapeutic use ; Chemokines/physiology ; HIV/drug effects/physiology ; HIV Infections/*drug therapy/*virology ; HIV Protease Inhibitors/*therapeutic use ; Humans ; Membrane Proteins/physiology ; Receptors, CCR5 ; Receptors, CXCR4 ; Receptors, Cytokine/*physiology ; Receptors, HIV/*physiology ; Virus Replication/drug effects
    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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  • 12
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-12-20
    Description: Epidermal growth factor receptor (EGFR) signaling was analyzed in mammalian cells conditionally defective for receptor-mediated endocytosis. EGF-dependent cell proliferation was enhanced in endocytosis-defective cells. However, early EGF-dependent signaling events were not uniformly up-regulated. A subset of signal transducers required the normal endocytic trafficking of EGFR for full activation. Thus, endocytic trafficking of activated EGFR plays a critical role not only in attenuating EGFR signaling but also in establishing and controlling specific signaling pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vieira, A V -- Lamaze, C -- Schmid, S L -- CA58689/CA/NCI NIH HHS/ -- CA69099/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2086-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, The Scripps Research Institute, La Jolla, CA 92037, USA. slschmid@scripps.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8953040" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; *Adaptor Proteins, Vesicular Transport ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Cell Division/drug effects ; Cell Membrane/metabolism ; Clathrin/*physiology ; Coated Pits, Cell-Membrane/physiology ; Dynamins ; *Endocytosis ; Enzyme Activation ; Epidermal Growth Factor/metabolism/pharmacology ; GTP Phosphohydrolases/physiology ; HeLa Cells ; Humans ; Isoenzymes/metabolism ; Phosphatidylinositol 3-Kinases ; Phospholipase C gamma ; Phosphorylation ; Phosphotransferases (Alcohol Group Acceptor)/metabolism ; Phosphotyrosine/metabolism ; Proteins/metabolism ; Receptor, Epidermal Growth Factor/*metabolism ; Shc Signaling Adaptor Proteins ; *Signal Transduction ; Type C Phospholipases/metabolism
    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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  • 13
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2008-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8984657" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cataract/etiology ; Chromosomes, Human, Pair 21 ; Connexins/genetics/*physiology ; Down Syndrome/*genetics ; Female ; Gap Junctions/*physiology ; Gene Dosage ; Heart Defects, Congenital/etiology ; Humans ; Infertility, Female/etiology ; Mice ; Protein Kinases/*genetics/metabolism ; *Protein-Serine-Threonine Kinases ; *Protein-Tyrosine Kinases
    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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  • 14
    Publication Date: 1996-12-20
    Description: An important feature of the human immune system is the ability of T cells to respond to small quantities of antigen. Class II major histocompatibility complex (MHC)-restricted T cells that expressed a costimulatory natural killer (NK) cell receptor for class I MHC proteins were cloned. In the presence of low doses of superantigen, the proliferative response of these T cell clones was three- to ninefold greater when the T cells were costimulated by way of the NK receptor. Thus, the action of costimulatory NK receptors on T cells may play a significant role in initiating and sustaining immune responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mandelboim, O -- Davis, D M -- Reyburn, H T -- Vales-Gomez, M -- Sheu, E G -- Pazmany, L -- Strominger, J L -- CA 47554/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2097-100.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA. jlstrom@fas.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8953044" target="_blank"〉PubMed〈/a〉
    Keywords: B-Lymphocytes/immunology ; Cell Line ; Clone Cells ; HLA Antigens/immunology ; HLA-C Antigens/immunology ; HLA-G Antigens ; Histocompatibility Antigens Class I/*immunology ; Histocompatibility Antigens Class II/*immunology ; Humans ; *Lymphocyte Activation ; Receptors, Immunologic/*immunology ; Superantigens/immunology ; T-Lymphocytes/*immunology ; Transfection
    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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  • 15
    Publication Date: 1996-12-20
    Description: The fundamental event in prion diseases seems to be a conformational change in cellular prion protein (PrPC) whereby it is converted into the pathologic isoform PrPSc. In fatal familial insomnia (FFI), the protease-resistant fragment of PrPSc after deglycosylation has a size of 19 kilodaltons, whereas that from other inherited and sporadic prion diseases is 21 kilodaltons. Extracts from the brains of FFI patients transmitted disease to transgenic mice expressing a chimeric human-mouse PrP gene about 200 days after inoculation and induced formation of the 19-kilodalton PrPSc fragment, whereas extracts from the brains of familial and sporadic Creutzfeldt-Jakob disease patients produced the 21-kilodalton PrPSc fragment in these mice. The results presented indicate that the conformation of PrPSc functions as a template in directing the formation of nascent PrPSc and suggest a mechanism to explain strains of prions where diversity is encrypted in the conformation of PrPSc.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Telling, G C -- Parchi, P -- DeArmond, S J -- Cortelli, P -- Montagna, P -- Gabizon, R -- Mastrianni, J -- Lugaresi, E -- Gambetti, P -- Prusiner, S B -- NS07219/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2079-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, University of California, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8953038" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*pathology ; *Brain Chemistry ; Creutzfeldt-Jakob Syndrome/metabolism/pathology ; Humans ; Mice ; Mice, Transgenic ; PrPSc Proteins/analysis/*chemistry ; Prion Diseases/*etiology/metabolism/pathology/transmission ; Prions/*chemistry ; *Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary
    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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  • 16
    Publication Date: 1996-12-20
    Description: Loss of heterozygosity (LOH) was detected in morphologically normal lobules adjacent to breast cancers. The most frequent aberration was at chromosome 3p22-25; of ten cases with this LOH in the carcinoma, six displayed the same LOH in adjacent normal lobules. This suggests that in a subset of sporadic breast cancers, a tumor suppresser gene at 3p22-25 may be important in initiation or early progression of tumorigenesis. Among sixteen breast cancers with LOH at 17p13.1 and five breast cancers with LOH at 11p15.5, one case each displayed the same LOH in adjacent normal lobules. Thus the molecular heterogeneity that characterizes invasive breast cancers may occur at the earliest detectable stages of progression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Deng, G -- Lu, Y -- Zlotnikov, G -- Thor, A D -- Smith, H S -- 2P50CA58207/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2057-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geraldine Brush Cancer Research Institute, California Pacific Medical Center, 2330 Clay Street, San Francisco, CA 94619, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8953032" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Breast/chemistry/*pathology ; Breast Neoplasms/chemistry/*genetics/pathology ; Carcinoma, Ductal, Breast/chemistry/*genetics/pathology ; Chromosomes, Human, Pair 11 ; Chromosomes, Human, Pair 13 ; Chromosomes, Human, Pair 17 ; Chromosomes, Human, Pair 3 ; DNA/genetics ; DNA, Neoplasm/genetics ; Female ; *Gene Deletion ; Heterozygote ; Humans ; Polymerase Chain Reaction ; Receptor, ErbB-2/analysis ; Tumor Suppressor Protein p53/analysis
    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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  • 17
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Borelli, T -- Kassman, A -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):1995.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8984653" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Great Britain ; Humans ; *Neoplasms ; Periodicals as Topic ; Research/*standards ; *Research Support as Topic ; *Tobacco Industry ; Universities
    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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  • 18
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Billock, V A -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2118-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8984663" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Color Perception ; Humans ; Macaca ; Retinal Cone Photoreceptor Cells/*physiology ; Retinal Ganglion Cells/*physiology ; Visual Cortex/physiology ; Visual Pathways
    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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  • 19
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-12-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, J -- New York, N.Y. -- Science. 1996 Dec 13;274(5294):1837-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8984641" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Disorders of Sex Development/chemically induced/*veterinary ; Estradiol/analysis/toxicity ; Estrogens/*analysis/toxicity ; Estrone/analysis/toxicity ; Ethinyl Estradiol/analysis ; Female ; Fish Diseases/*chemically induced ; Gonadal Steroid Hormones/analysis ; Humans ; Male ; Sewage/*chemistry ; Vitellogenins/biosynthesis ; Water Pollutants, Chemical/*toxicity
    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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  • 20
    Publication Date: 1996-12-13
    Description: Hominid fossils from Ngandong and Sambungmacan, Central Java, are considered the most morphologically advanced representatives of Homo erectus. Electron spin resonance (ESR) and mass spectrometric U-series dating of fossil bovid teeth collected from the hominid-bearing levels at these sites gave mean ages of 27 +/- 2 to 53.3 +/- 4 thousand years ago; the range in ages reflects uncertainties in uranium migration histories. These ages are 20,000 to 400,000 years younger than previous age estimates for these hominids and indicate that H. erectus may have survived on Java at least 250,000 years longer than on the Asian mainland, and perhaps 1 million years longer than in Africa. The new ages raise the possibility that H. erectus overlapped in time with anatomically modern humans (H. sapiens) in Southeast Asia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Swisher, C C 3rd -- Rink, W J -- Anton, S C -- Schwarcz, H P -- Curtis, G H -- Suprijo, A -- Widiasmoro -- New York, N.Y. -- Science. 1996 Dec 13;274(5294):1870-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709 USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8943192" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Animals ; Asia, Southeastern ; Australia ; Cattle ; Dental Enamel/chemistry ; Dentin/chemistry ; Electron Spin Resonance Spectroscopy ; *Fossils ; History, Ancient ; *Hominidae ; Humans ; Indonesia ; Mass Spectrometry ; Paleodontology ; *Paleontology ; Uranium/analysis
    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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