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  • Articles  (1,332)
  • Latest Papers from Table of Contents or Articles in Press  (1,332)
  • United States  (930)
  • Female  (489)
  • 1990-1994  (1,332)
  • Physics  (1,332)
  • Biology  (1,332)
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  • Articles  (1,332)
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  • 1
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    Coordinate initiation of Drosophila development by regulated polyadenylation of maternal messenger RNAs (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-23
    Description: Pattern formation in Drosophila depends initially on the translational activation of maternal messenger RNAs (mRNAs) whose protein products determine cell fate. Three mRNAs that dictate anterior, dorsoventral, and terminal specification--bicoid, Toll, and torso, respectively--showed increases in polyadenylate [poly(A)] tail length concomitant with translation. In contrast, posteriorly localized nanos mRNA, although also translationally activated, was not regulated by poly(A) status. These results implicate at least two mechanisms of mRNA activation in flies. Studies with bicoid mRNA showed that cytoplasmic polyadenylation is necessary for translation, establishing this pathway as essential for embryogenesis. Combined, these experiments identify a regulatory pathway that can coordinate initiation of maternal pattern formation systems in Drosophila.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Salles, F J -- Lieberfarb, M E -- Wreden, C -- Gergen, J P -- Strickland, S -- GM51584/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 Dec 23;266(5193):1996-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, University Medical Center at Stony Brook, NY 11794-8651.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7801127" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cytoplasm/metabolism ; Drosophila/*embryology/genetics ; *Drosophila Proteins ; Embryonic Development ; Female ; *Homeodomain Proteins ; Insect Hormones/genetics ; Membrane Glycoproteins/genetics ; Molecular Sequence Data ; Morphogenesis ; Ovary/metabolism ; Poly A/*metabolism ; *Protein Biosynthesis ; Protein-Tyrosine Kinases/genetics ; RNA, Messenger/genetics/*metabolism ; *RNA-Binding Proteins ; *Receptor Protein-Tyrosine Kinases ; *Receptors, Cell Surface ; Toll-Like Receptors ; *Trans-Activators
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Embryo cloners jumped the gun (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1994 Dec 23;266(5193):1949.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11644654" target="_blank"〉PubMed〈/a〉
    Keywords: *Cloning, Organism ; Deception ; *Embryo Research ; Embryo, Mammalian ; Ethical Review ; Ethics ; Ethics Committees ; Ethics Committees, Research ; Federal Government ; Government ; Government Regulation ; Humans ; National Institutes of Health (U.S.) ; Organizational Policy ; *Research ; Research Personnel ; *Scientific Misconduct ; Social Control, Formal ; United States ; 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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  • 3
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    PCR products and CITES (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jones, M -- New York, N.Y. -- Science. 1994 Dec 23;266(5193):1930.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7801116" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Conservation of Natural Resources/*legislation & jurisprudence ; *Dna ; Government Agencies ; Licensure ; *Polymerase Chain Reaction ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    FBI says sting nabs biotech spies (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Travis, J -- New York, N.Y. -- Science. 1994 Dec 23;266(5193):1941.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7801117" target="_blank"〉PubMed〈/a〉
    Keywords: Biotechnology/*legislation & jurisprudence ; *Cell Line ; Erythropoietin/*biosynthesis ; Government Agencies ; Humans ; Patents as Topic ; Recombinant Proteins/*biosynthesis ; Russia ; *Theft ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Specific association of human telomerase activity with immortal cells and cancer (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-23
    Description: Synthesis of DNA at chromosome ends by telomerase may be necessary for indefinite proliferation of human cells. A highly sensitive assay for measuring telomerase activity was developed. In cultured cells representing 18 different human tissues, 98 of 100 immortal and none of 22 mortal populations were positive for telomerase. Similarly, 90 of 101 biopsies representing 12 human tumor types and none of 50 normal somatic tissues were positive. Normal ovaries and testes were positive, but benign tumors such as fibroids were negative. Thus, telomerase appears to be stringently repressed in normal human somatic tissues but reactivated in cancer, where immortal cells are likely required to maintain tumor growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, N W -- Piatyszek, M A -- Prowse, K R -- Harley, C B -- West, M D -- Ho, P L -- Coviello, G M -- Wright, W E -- Weinrich, S L -- Shay, J W -- AG07992/AG/NIA NIH HHS/ -- CA50195/CA/NCI NIH HHS/ -- CA65178/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1994 Dec 23;266(5193):2011-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geron Corporation, Menlo Park, CA 94025.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7605428" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cell Division ; Cell Line ; Cell Line, Transformed/enzymology ; DNA Nucleotidylexotransferase/*metabolism ; Enzyme Activation ; Enzyme Repression ; Female ; Humans ; Male ; Molecular Sequence Data ; Neoplasms/*enzymology ; Ovary/enzymology ; Polymerase Chain Reaction ; Testis/enzymology ; Tumor Cells, Cultured
    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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  • 6
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    Identification of herpesvirus-like DNA sequences in AIDS-associated Kaposi's sarcoma (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-16
    Description: Representational difference analysis was used to isolate unique sequences present in more than 90 percent of Kaposi's sarcoma (KS) tissues obtained from patients with acquired immunodeficiency syndrome (AIDS). These sequences were not present in tissue DNA from non-AIDS patients, but were present in 15 percent of non-KS tissue DNA samples from AIDS patients. The sequences are homologous to, but distinct from, capsid and tegument protein genes of the Gammaherpesvirinae, herpesvirus saimiri and Epstein-Barr virus. These KS-associated herpesvirus-like (KSHV) sequences appear to define a new human herpesvirus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, Y -- Cesarman, E -- Pessin, M S -- Lee, F -- Culpepper, J -- Knowles, D M -- Moore, P S -- New York, N.Y. -- Science. 1994 Dec 16;266(5192):1865-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, College of Physicians and Surgeons, Columbia University, New York, NY 10032.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7997879" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*complications ; Amino Acid Sequence ; Base Composition ; Base Sequence ; Blotting, Southern ; Cloning, Molecular ; DNA, Viral/*analysis/chemistry/genetics ; Female ; Herpesviridae/*genetics ; Herpesvirus 2, Saimiriine/genetics ; Herpesvirus 4, Human/genetics ; Humans ; Male ; Molecular Sequence Data ; Nucleic Acid Hybridization ; Open Reading Frames ; Polymerase Chain Reaction ; Retrospective Studies ; Sarcoma, Kaposi/etiology/*virology ; Sequence Homology, Amino Acid
    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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  • 7
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    Specification of C/EBP function during Drosophila development by the bZIP basic region (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-16
    Description: The biologically relevant interactions of a transcription factor are those that are important for function in the organism. Here, a transgenic rescue assay was used to determine which molecular functions of Drosophila CCAAT/enhancer binding protein (C/EBP), a basic region-leucine zipper transcription factor, are required for it to fulfill its essential role during development. Chimeric proteins that contain the Drosophila C/EBP (DmC/EBP) basic region, a heterologous zipper, and a heterologous activation domain could functionally substitute for DmC/EBP. Mammalian C/EBPs were also functional in Drosophila. In contrast, 9 of 25 single amino acid substitutions in the basic region disrupted biological function. Thus, the conserved basic region specifies DmC/EBP activity in the organism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rorth, P -- New York, N.Y. -- Science. 1994 Dec 16;266(5192):1878-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Embryology, Carnegie Institution of Washington, Baltimore, MD 21210.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7997882" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Animals, Genetically Modified ; Base Sequence ; Basic-Leucine Zipper Transcription Factors ; CCAAT-Enhancer-Binding Proteins ; DNA/metabolism ; DNA-Binding Proteins/chemistry/genetics/*physiology ; Drosophila/genetics/*growth & development ; Female ; G-Box Binding Factors ; *Leucine Zippers ; Male ; Molecular Sequence Data ; Nuclear Proteins/chemistry/genetics/*physiology ; Recombinant Fusion Proteins ; Transcription Factors/chemistry/genetics/*physiology ; Transcriptional Activation
    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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  • 8
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    Funding of newly submitted NIH grant applications (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mandel, H G -- New York, N.Y. -- Science. 1994 Dec 16;266(5192):1789.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7997868" target="_blank"〉PubMed〈/a〉
    Keywords: Financing, Government ; National Institutes of Health (U.S.)/*economics ; Research Support as Topic/*economics ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    The company that genome researchers love to hate (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1994 Dec 16;266(5192):1800-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7997873" target="_blank"〉PubMed〈/a〉
    Keywords: *Biotechnology ; Chromosome Mapping ; DNA Repair ; DNA, Complementary/*genetics ; *Databases, Factual ; Gene Expression ; *Genome, Human ; Human Genome Project ; Humans ; National Institutes of Health (U.S.) ; Private Sector ; Public Sector ; Sequence Analysis, DNA ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Malaria vaccine research (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-16
    Description: In our report "Activation of Raf as a result of recruitment to the plasma membrane" (3 June, p. 1463) (1), panels E and F of figure 1 on page 1464 were incorrect. The correct photographs appear below. In addition, the [See figure in the PDF file] second sentence of the legend to figure 1 should have read, "The Raf constructs were tagged at the COOH-terminus with a Glu-Glu epitope (MEYMPME) (24) for c-Raf, or at the NH(2)-terminus with both the Glu-Glu and the Myc (MEQKLISEEDL) (23) epitopes for RafCAAX"; the next-to-the-last sentence of the legend to figure 1 should have read, "The c-Raf constructs in (A through D) are Glu-Glu-tagged and were detected by using an anti Glu-Glu antibody, and the RafCAAX and Raf6QCAAX constructs used in E and F were detected by using the antibody to Raf COOH-terminal peptide"; and the third sentence of note 26 should have read, "After blocking with 5% milk in phosphate-buffered saline (M-PBS), cells were incubated with a mouse monoclonal antibody to Glu-Glu or a rabbit polyclonal antibody to a 20-amino acid COOH-terminal peptide of Raf-1 (Santa Cruz Biotechnology, Santa Cruz, California), washed, and incubated with donkey antibodies to mouse or rabbit IgG combined with Texas Red (Jackson) in M-PBS, washed, and mounted in FITC-Guard (Testog)."〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ballou, W R -- Diggs, C L -- Landry, S -- Hall, B F -- New York, N.Y. -- Science. 1994 Dec 16;266(5192):1792.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7864993" target="_blank"〉PubMed〈/a〉
    Keywords: Government Agencies ; Humans ; International Cooperation ; *Malaria Vaccines ; National Institutes of Health (U.S.) ; *Research ; United States ; World Health Organization
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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