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  • Oxford University Press  (80)
  • American Association for the Advancement of Science (AAAS)
  • 1990-1994  (78)
  • 1980-1984  (10)
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  • 1
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    Chromosomes of Galician mussels (1990)
    Oxford University Press
    Details
    Publikationsdatum: 1990-01-01
    Print ISSN: 0260-1230
    Digitale ISSN: 1464-3766
    Thema: Biologie
    Publiziert von Oxford University Press
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    Hair analysis (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1990-11-23
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez, F -- Poet, T S -- Watson, R R -- New York, N.Y. -- Science. 1990 Nov 23;250(4984):1070.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2251495" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cocaine/metabolism/pharmacokinetics ; Hair/*chemistry/metabolism ; Humans ; Male ; Mice ; Morphine/metabolism/pharmacokinetics ; *Substance Abuse Detection
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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    Cross-regulatory interactions between the proneural achaete and scute genes of Drosophila (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1991-03-22
    Beschreibung: The achaete (ac) and scute (sc) genes of Drosophila allow cells to become sensory organ mother cells. Although ac and sc have similar patterns of expression, deletion of either gene removes specific subsets of sensory organs. This specificity was shown to reside in the peculiar regulation of ac and sc expression. These genes are first activated in complementary spatial domains in response to different cis-regulatory sequences. Each gene product then stimulates expression of the other gene, thus generating similar patterns of expression. Therefore, removal of one gene leads to the absence of both proneural gene products and sensory organs in the sites specified by its cis-regulatory sequences.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez, C -- Modolell, J -- New York, N.Y. -- Science. 1991 Mar 22;251(5000):1485-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centro de Biologia Molecular, Consejo Superior de Investigaciones Cientificas, Universidad Autonoma de Madrid, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1900954" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Drosophila melanogaster/embryology/*genetics ; Gene Expression Regulation ; Nervous System/*embryology ; Promoter Regions, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 4
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    Oncostatin M as a potent mitogen for AIDS-Kaposi's sarcoma-derived cells (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1992-03-13
    Beschreibung: Oncostatin M, a cytokine produced by activated lymphoid cells, regulates the growth and differentiation of a number of tumor and normal cells. In contrast to its effects on normal endothelial and aortic smooth muscle cell cultures, Oncostatin M was a potent mitogen for cells derived from acquired immunodeficiency syndrome-related Kaposi's sarcoma (AIDS-KS). After exposure to Oncostatin M, AIDS-KS cells assumed a spindle morphology, had an increased ability to proliferate in soft agar, and secreted increased amounts of interleukin-6. Oncostatin M RNA and immunoreactive Oncostatin M protein were found in AIDS-KS-derived cell isolates. These results suggest that Oncostatin M may play a role in the pathogenesis of AIDS-KS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miles, S A -- Martinez-Maza, O -- Rezai, A -- Magpantay, L -- Kishimoto, T -- Nakamura, S -- Radka, S F -- Linsley, P S -- AI27660/AI/NIAID NIH HHS/ -- CA 01588/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1992 Mar 13;255(5050):1432-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉UCLA AIDS Center 90024.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1542793" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acquired Immunodeficiency Syndrome/*complications ; Base Sequence ; Cell Division/drug effects ; Growth Substances/biosynthesis/*physiology ; Humans ; Molecular Sequence Data ; Neoplasm Proteins/biosynthesis ; Oncostatin M ; Peptide Biosynthesis ; Peptides/*physiology ; Recombinant Proteins/pharmacology ; Sarcoma, Kaposi/etiology/metabolism/*pathology ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 5
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    A wingless-dependent polar coordinate system in Drosophila imaginal discs (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1993-01-22
    Beschreibung: The patterning of the imaginal discs in Drosophila melanogaster is a progressive process that, like the patterning of the larval epidermis during embryogenesis, requires the activity of segment polarity genes. One segment polarity gene, wingless, encodes a homolog of the mouse proto-oncogene Wnt-1 and plays a prominent role in the patterning of the larval epidermis and the imaginal discs. However, whereas the function of wingless in the embryo is initially associated with a pattern of stripes along the anteroposterior axis that are part of a Cartesian coordinate system, it is shown here that during imaginal development wingless is associated with a pattern of sectors that provide references for a polar coordinate system homologous to that postulated in a well-known model for the regeneration of insect and vertebrate limbs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Couso, J P -- Bate, M -- Martinez-Arias, A -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1993 Jan 22;259(5094):484-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, University of Cambridge, United Kingdom.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8424170" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Drosophila melanogaster/embryology/*genetics/growth & development ; Embryo, Nonmammalian/cytology/physiology ; Gene Expression ; Larva ; Mice ; Phenotype ; Protein-Tyrosine Kinases/genetics ; Proto-Oncogene Proteins/genetics ; Proto-Oncogenes ; Sequence Homology, Nucleic Acid ; Wings, Animal ; Wnt Proteins ; Wnt1 Protein ; *Zebrafish Proteins ; beta-Galactosidase/genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 6
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    Effect of scale on food web structure (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1993-04-09
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez, N D -- New York, N.Y. -- Science. 1993 Apr 9;260(5105):242-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17807184" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 7
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    The embryonic vertebrate forebrain: the prosomeric model (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1994-10-28
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rubenstein, J L -- Martinez, S -- Shimamura, K -- Puelles, L -- MH01046-01/MH/NIMH NIH HHS/ -- MH49428-01/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1994 Oct 28;266(5185):578-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Nina Ireland Laboratory of Developmental Neurobiology, University of California, San Francisco 94143-0984.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7939711" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Biological Evolution ; Central Nervous System/embryology ; Diencephalon/embryology ; Embryonic and Fetal Development ; Gene Expression Regulation, Developmental ; Genes, Homeobox ; Genes, Regulator ; *Models, Biological ; Morphogenesis ; Prosencephalon/*embryology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 8
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    The Ischigualasto Tetrapod Assemblage (Late Triassic, Argentina) and 40Ar/39Ar Dating of Dinosaur Origins (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1993-05-07
    Beschreibung: (40)Ar/(39)Ar dating of sanidine from a bentonite interbedded in the Ischigualasto Formation of northwestern Argentina yielded a plateau age of 227.8 +/- 0.3 million years ago. This middle Carnian age is a direct calibration of the Ischigualasto tetrapod assemblage, which includes some of the best known early dinosaurs. This age shifts last appearances of Ischigualasto taxa back into the middle Carnian, diminishing the magnitude of the proposed late Carnian tetrapod extinction event. By 228 million years ago, the major dinosaurian lineages were established, and theropods were already important constituents of the carnivorous tetrapod guild in the Ischigualasto-Villa Union Basin. Dinosaurs as a whole remained minor components of tetrapod faunas for at least another 10 million years.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rogers, R R -- Swisher, C C 3rd -- Sereno, P C -- Monetta, A M -- Forster, C A -- Martinez, R N -- New York, N.Y. -- Science. 1993 May 7;260(5109):794-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17746113" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 9
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    Nitrogen fixation by floating diatom mats: a source of new nitrogen to oligotrophic ocean waters (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1983-07-08
    Beschreibung: Nitrogen fixation, apparently by bacterial endosymbionts, is associated with intertwining chains of two species of the diatom Rhizosolenia. In situ fixation rates were enhanced by incubation in the dark, whereas concurrent shipboard experiments either underestimated or did not detect nitrogen fixation. This is the first example of nitrogen fixation associated with a bacteria-diatom symbiosis in the pelagic zone, and it indicates that these systems may contribute a significant amount of "new" nitrogen to oligotrophic waters.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez, L -- Silver, M W -- King, J M -- Alldredge, A L -- New York, N.Y. -- Science. 1983 Jul 8;221(4606):152-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17769213" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 10
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    Identification ofAeromonas schubertiiandAeromonas jandaeiby using a polymerase chain reaction-probe test (1993)
    Oxford University Press
    Details
    Publikationsdatum: 1993-04-01
    Print ISSN: 0378-1097
    Digitale ISSN: 1574-6968
    Thema: Biologie
    Publiziert von Oxford University Press im Namen von Federation of European Microbiological Societies.
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