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  • 201
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-07-10
    Beschreibung: Rats treated with chloramphenicol from days 7 to 21 of intrauterine life (50 milligrams per kilogram per day, injected subcutaneously into the mothers) or in the first 3 days of extrauterine life (50 to 100 milligrams per kilogram per day) were trained for avoidance conditioning when 60 days old. The acquisition of the avoidance response was impaired to a highly significant degree in all the treated groups.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bertolini, A -- Poggioli, R -- New York, N.Y. -- Science. 1981 Jul 10;213(4504):238-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244633" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aging ; Animals ; Avoidance Learning/*drug effects ; Brain/drug effects/embryology/*growth & development ; Chloramphenicol/*pharmacology ; Female ; Male ; Maternal-Fetal Exchange ; Pregnancy ; Rats ; Sex Factors
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 202
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-11-13
    Beschreibung: Extraction of fibronectin from two human tissues, lung parenchyma and placental villi, was facilitated by the incorporation of heparin into extraction media. The effect of heparin was additive to the effect of urea which is known to extract fibronectin. These experiments provide further evidence that fibronectin and glycosaminoglycans are associated in connective tissues and the use of heparin forms the basis for a simple method for extraction and quantitation of tissue fibronectin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bray, B A -- Mandl, I -- Turino, G M -- HL 15832/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1981 Nov 13;214(4522):793-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7292011" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Dermatan Sulfate ; Female ; Fibronectins/*isolation & purification ; *Heparin ; Heparitin Sulfate ; Humans ; Lung/analysis ; Placenta/analysis ; Pregnancy ; Urea
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 203
    Publikationsdatum: 1981-12-04
    Beschreibung: When pregnant rats were fed a 50 percent galactose diet there was a striking reduction in oocyte number in the offspring. The most prominent effects were noted after exposure to galactose during the premeiotic stages of oogenesis. Prenatal exposure to galactose or its metabolites may contribute to the premature ovarian failure characteristic of human galactosemia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Y T -- Mattison, D R -- Feigenbaum, L -- Fukui, H -- Schulman, J D -- New York, N.Y. -- Science. 1981 Dec 4;214(4525):1145-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7302587" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Dietary Carbohydrates/*physiology ; Female ; Fetus/drug effects/physiology ; Galactose/*pharmacology ; Maternal-Fetal Exchange ; Oocytes/drug effects/*physiology ; Ovum/*physiology ; Pregnancy ; Rats ; Rats, Inbred Strains
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 204
    Publikationsdatum: 1981-05-01
    Beschreibung: Female prairie voles (Microtus ochrogaster) exposed to a single drop of male urine on the upper lip showed changes in concentrations of luteinizing hormone-releasing hormone (LHRH) and norepinephrine in olfactory bulb tissue; no such changes occurred in dopamine concentration. The changes were measured in the posterior but not the anterior olfactory bulb tissue of females within 1 hour after they were exposed to urine. These females also showed rapid increases in serum concentrations of luteinizing hormone. Females exposed to water on the upper lip showed none of these changes. These results suggest that in this species LHRH and norepinephrine in the olfactory bulb may mediate luteinizing hormone release in response to external (pheromonal) chemical cues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dluzen, D E -- Ramirez, V D -- Carter, C S -- Getz, L L -- HDO9328/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1981 May 1;212(4494):573-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7010608" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Arvicolinae/*physiology ; Estrus ; Female ; Gonadotropin-Releasing Hormone/*metabolism ; Humans ; Luteinizing Hormone/blood ; Male ; Norepinephrine/*metabolism ; Olfactory Bulb/*metabolism ; Pheromones/*urine ; Pregnancy ; Reproduction ; Rodentia/*physiology ; Stress, Psychological/physiopathology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 205
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-12-18
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gilbert, W -- New York, N.Y. -- Science. 1981 Dec 18;214(4527):1305-12.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7313687" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; Chemical Phenomena ; Chemistry ; DNA/*genetics ; Eukaryotic Cells/physiology ; *Genes ; Hydrazines ; Lac Operon ; Methylation ; Prokaryotic Cells/physiology ; Sulfuric Acid Esters
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 206
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-04-17
    Beschreibung: Sexually receptive female Spermophilus beldingi (Rodentia: Sciuridae) usually mate with several different males. The paternity of 27 litters born in 1977 and 1978 was ascertained by combining field observations of mating with laboratory paternity exclusion analyses. Most of the litters (78 percent) were multiply sired, usually by two or three males. This may be the highest frequency of multiple paternity ever directly demonstrated in a natural population.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hanken, J -- Sherman, P W -- New York, N.Y. -- Science. 1981 Apr 17;212(4492):351-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209536" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Female ; Male ; Pregnancy ; Sciuridae/*physiology ; *Sexual Behavior, Animal
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 207
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-06-19
    Beschreibung: Concentrations of estradiol and progesterone in blood collected during the 12.5-day gestation period of the Virginia opossum were not significantly different from those during equivalent days of the estrous cycle. Progesterone was correlated with an index of corpora luteral mass. Ratio of estradiol to progesterone were highest 3 to 4 days before estrus and on the day of parturition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harder, J D -- Fleming, M W -- New York, N.Y. -- Science. 1981 Jun 19;212(4501):1400-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233228" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Corpus Luteum/physiology ; Estradiol/*blood ; Estrus ; Female ; Opossums/*physiology ; Pregnancy ; *Pregnancy, Animal ; Progesterone/*blood ; Species Specificity
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 208
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-05-29
    Beschreibung: Stable somatic cell hybrids were obtained by fusing Xenopus lymphocytes with mouse myeloma cells. These hybrids contained one to four Xenopus chromosomes and expressed Xenopus gene products, one of which was a lymphocyte membrane protein of 85,000 daltons precipitated by a monoclonal antibody.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hengartner, H -- Du Pasquier, L -- New York, N.Y. -- Science. 1981 May 29;212(4498):1034-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6785884" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antibodies ; Antibodies, Monoclonal ; Cell Line ; Clone Cells ; Genes ; Hybrid Cells/*physiology ; Lymphocytes/*physiology ; Membrane Proteins/biosynthesis ; Mice ; Molecular Weight ; Neoplasms, Experimental/physiopathology ; Plasmacytoma/*physiopathology ; Xenopus
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 209
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-06-12
    Beschreibung: A survey of all available double-stranded RNA crystal structures shows that there is a considerable range of variation in local conformation of a given base-pair doublet, but that there is no significant correlation between base-pair sequence and RNA local conformation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holbrook, S R -- Sussman, J L -- Kim, S H -- CA 27454/CA/NCI NIH HHS/ -- NS 15174/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 12;212(4500):1275-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6165084" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Composition ; Base Sequence ; *Nucleic Acid Conformation ; *Rna ; RNA, Double-Stranded
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 210
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-05-22
    Beschreibung: Long-term oral administration of the long-acting opiate 1-alpha-acetylmethadol (LAAM) to female rats beginning on the day of conception interfered with the dams' ability to carry litters to term. When treatment was initiated 3 weeks prior to mating this effect was not observed. Daily administration of the opiate antagonist naloxone from day 14 of gestation through term, to precipitate withdrawal in utero, resulted in increased stillbirths, decreased pup weight and size, and weight loss 24 hours after birth. These data question the validity of animal experiments which purport to be models for methadone maintenance programs but in which treatment is started immediately prior to or soon after conception. They also suggest that withdrawal in utero may be responsible for many of the adverse effects of opiates on human and animal development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lichtblau, L -- Sparber, S B -- DA 01880/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1981 May 22;212(4497):943-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7195068" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Drug Tolerance ; Embryo Implantation/drug effects ; Female ; Fetal Death/*etiology ; Humans ; Litter Size/drug effects ; Methadone/*analogs & derivatives ; Methadyl Acetate/*adverse effects/antagonists & inhibitors ; Naloxone/pharmacology ; Opioid-Related Disorders/*complications ; Pregnancy ; Pregnancy, Animal/*drug effects ; Rats ; Substance Withdrawal Syndrome/*complications
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 211
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-10-02
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1981 Oct 2;214(4516):42-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7280679" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Biological Evolution ; Embryology/*trends ; Genes ; Selection, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 212
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-05-15
    Beschreibung: The gene for prolactin has been located on chromosome 6 in humans. DNA fragments of 4.8 and 4.0 kilobases containing prolactin gene sequences were identified in human genomic DNA, whereas DNA fragments of 7.4, 3.6, and 3.3 kilobases containing prolactin gene sequences were found in mouse cells. In somatic cell hybrids of human and mouse cells the 7.4-, 3.6-, and 3.3-kilobase mouse fragments were always present, whereas the 4.8- and 4.0-kilobase human fragments were only present when human chromosome 6 was also present. We conclude that the prolactin gene resides on chromosome 6, a different location from those of the genes for the related hormones chorionic somatomammotropin and growth hormone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Owerbach, D -- Rutter, W J -- Cooke, N E -- Martial, J A -- Shows, T B -- AM 21344/AM/NIADDK NIH HHS/ -- GM 20454/GM/NIGMS NIH HHS/ -- HD 05196/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 May 15;212(4496):815-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7221563" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Chromosomes, Human, 6-12 and X ; Genes ; Genetic Linkage ; Growth Hormone/genetics ; Humans ; Hybrid Cells/physiology ; Mice ; Placental Lactogen/genetics ; Prolactin/*genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 213
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-11-20
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rakic, P -- EY 02593/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1981 Nov 20;214(4523):928-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7302569" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Axons/ultrastructure ; Brain/embryology/*growth & development ; Female ; Functional Laterality ; Geniculate Bodies/embryology/growth & development ; Macaca mulatta ; Microscopy, Electron ; Pregnancy ; Retina/physiology ; Synapses/physiology ; Visual Cortex/embryology/growth & development ; *Visual Perception
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 214
    Publikationsdatum: 1982-12-17
    Beschreibung: A 311-base pair fragment containing the SV40 origin of replication was linked to the chicken thymidine kinase gene on a recombinant plasmid. This molecule was transfected into human 143 thymidine kinase-deficient (TK-) cells, and colonies positive for thymidine kinase were selected. When cell lines derived from these colonies were fused to permissive simian cells that produce SV40 T antigen, the recombinant plasmid excised itself from the human cellular genome and replicated with a high copy number per cell. These results show that this segment of the viral genome is the only sequence required in cis to mediate SV40 excision and replication upon fusion to permissive cells. In addition, we have shown that excised plasmids apparently identical to the input DNA can be efficiently rescued in Escherichia coli. SV40 excision and replication may therefore be useful for the recovery of cloned genes from eukaryotic cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Conrad, S E -- Liu, C P -- Botchan, M R -- CA 30490/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Dec 17;218(4578):1223-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6293055" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Cells, Cultured ; Chickens ; *DNA Replication ; DNA, Viral/*genetics ; Gene Expression Regulation ; Genes, Viral ; Humans ; Recombination, Genetic ; Simian virus 40/*genetics ; *Virus Replication
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 215
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-08-27
    Beschreibung: Cellular genes potentially capable of inducing oncogenic transformation have been identified by homology to the transforming genes of retroviruses and by the biological activity of cellular DNA's in transfection assays. DNA's of various tumors induce transformation with high efficiencies, indicating that oncogenesis can involve dominant genetic alterations resulting in activation of cellular transforming genes. The identification and characterization of cellular transforming genes and their possible involvement in naturally occurring cancers, is discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cooper, G M -- New York, N.Y. -- Science. 1982 Aug 27;217(4562):801-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6285471" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; *Cell Transformation, Neoplastic ; Cells, Cultured ; Chick Embryo ; DNA/genetics ; DNA Restriction Enzymes ; DNA, Viral/genetics ; Gene Expression Regulation ; *Genes ; Genes, Viral ; Humans ; Mice ; Neoplasms/*genetics ; Oncogene Protein pp60(v-src) ; Rats ; Retroviridae/*genetics ; Transfection ; Viral Proteins/genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 216
    Publikationsdatum: 1982-11-12
    Beschreibung: Nonrandom chromosome rearrangements of chromosome 22 have been identified in different human malignancies. As a result of Southern blot hybridization of a c-sis probe to DNA's from mouse-human somatic cell hybrids, the human homolog (c-sis) of the transforming gene of simian sarcoma virus was assigned to chromosome 22. Hybrids between thymidine kinase-deficient mouse cells and human fibroblasts carrying a translocation of the region q11-qter of chromosome 22 to chromosome 17 were also analyzed. These studies demonstrate that the human c-sis gene is on region 22q11 greater than qter.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dalla-Favera, R -- Gallo, R C -- Giallongo, A -- Croce, C M -- CA-10815/CA/NCI NIH HHS/ -- CA-16685/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Nov 12;218(4573):686-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6291150" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Cell Transformation, Viral ; Chromosome Mapping ; *Chromosomes, Human, 21-22 and Y ; Genes ; Humans ; *Oncogenes ; Retroviridae/*genetics ; Sarcoma Virus, Woolly Monkey/*genetics
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 217
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-07-02
    Beschreibung: Research on the early development of the sea urchin offers new insights into the process of embryogenesis. Maternal messenger RNA stored in the unfertilized egg supports most of the protein synthesis in the early embryo, but the structure of maternal transcripts suggests that additional functions are also possible. The overall developmental patterns of transcription and protein synthesis are known, and current measurements describe the expression of specific genes, including the histone genes, the ribosomal genes, and the actin genes. Possible mechanisms of developmental commitment are explored for regions of the early embryo that give rise to specified cell lineages, such as the micromere-mesenchyme cell lineage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davidson, E H -- Hough-Evans, B R -- Britten, R J -- GM20927/GM/NIGMS NIH HHS/ -- HD05753/HD/NICHD NIH HHS/ -- RR00986/RR/NCRR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1982 Jul 2;217(4554):17-26.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6178156" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Actins/genetics ; Animals ; Base Sequence ; Blastocyst/physiology ; Embryo, Nonmammalian/*physiology ; Female ; Fertilization ; Gastrula/physiology ; Histones/genetics ; Kinetics ; Larva/physiology ; Polyribosomes/metabolism ; RNA/genetics ; RNA, Messenger/genetics ; Ribosomal Proteins/genetics ; Sea Urchins/*physiology ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 218
    Publikationsdatum: 1982-09-03
    Beschreibung: Harvey murine sarcoma virus is a retrovirus which transforms cells by means of a single virally encoded protein called p21 has. We have determined the nucleotide sequence of 1.0 kilobase in the 5' half of the viral genome which encompasses the has coding sequences and its associated regulatory signals. The nucleotide sequence has identified the amino acid sequence of two additional overlapping polypeptides which share their reading frames and the carboxyl termini with p21 but which contain additional NH2-terminal amino acids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dhar, R -- Ellis, R W -- Shih, T Y -- Oroszlan, S -- Shapiro, B -- Maizel, J -- Lowy, D -- Scolnick, E -- New York, N.Y. -- Science. 1982 Sep 3;217(4563):934-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6287572" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; Cell Transformation, Viral ; Cells, Cultured ; Defective Viruses/*genetics ; Genes, Viral ; Oncogene Protein p21(ras) ; Peptide Fragments ; Protein Biosynthesis ; Protein Conformation ; RNA, Viral/genetics ; Sarcoma Viruses, Murine/*genetics ; Viral Proteins/analysis/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 219
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-12-10
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dover, G A -- Strachan, T -- Coen, E S -- Brown, S D -- New York, N.Y. -- Science. 1982 Dec 10;218(4577):1069.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7146894" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Biological Evolution ; DNA/*genetics ; Genes ; Humans
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 220
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-08-20
    Beschreibung: An extensive computer-assisted analysis of known pre-proinsulin coding sequences has shown correlations that can be interpreted as evidence for an intron-mediated juxtaposition of exons in the evolution of these genes. The evidence includes the discovery that the regions of the pre-proinsulin genes that code for the signal peptide consist of nearly tandem repeating units of nine base pairs. This pattern reappears in the C region of the genes after a large intron that occurs in three of the four genes analyzed. A model is proposed in which primordial insulin was coded for by two separate minigenes arising from a gene duplication, each with identical or nearly identical signal peptide coding regions. The minigenes fused into one transcriptional unit mediated by the large intron, and the signal peptide coding region of one of the putative minigenes evolved into the latter portion of the C peptide coding region.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Douthart, R J -- Norris, F H -- New York, N.Y. -- Science. 1982 Aug 20;217(4561):729-32.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7100918" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; *Biological Evolution ; Computers ; Cricetinae ; Disulfides ; Genes ; Humans ; Insulin ; Models, Genetic ; Proinsulin/*genetics ; Protein Precursors/*genetics ; Rats ; Repetitive Sequences, Nucleic Acid
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  • 221
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-03-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frisch, R E -- New York, N.Y. -- Science. 1982 Mar 5;215(4537):1272-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7199206" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amenorrhea/*physiopathology ; Female ; Humans ; *Lactation ; *Nutritional Physiological Phenomena ; *Postpartum Period ; Pregnancy
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  • 222
    Publikationsdatum: 1982-03-12
    Beschreibung: The concentration of oxytocin receptors increased in the myometrium of pregnant women and reached maximum levels in early labor. Concentrations of oxytocin receptors were also high in the decidua and reached a maximum at parturition. In vitro, prostaglandin production by the decidua, but not by the myometrium, was increased by the addition of oxytocin. Oxytocin may therefore stimulate uterine contractions by acting both directly on the myometrium and indirectly on decidual prostaglandin production. Oxytocin receptors are probably crucial for the onset of human labor, and the stimulus for the increase in uterine prostaglandins may be oxytocin originating from the fetus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fuchs, A R -- Fuchs, F -- Husslein, P -- Soloff, M S -- Fernstrom, M J -- HD8406/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1982 Mar 12;215(4538):1396-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6278592" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Decidua/physiology ; Female ; Humans ; *Labor, Obstetric ; Myometrium/physiology ; Oxytocin/*physiology ; Pregnancy ; Prostaglandins E/biosynthesis ; Prostaglandins F/biosynthesis ; Receptors, Cell Surface/*physiology ; Uterus/*physiology
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  • 223
    Publikationsdatum: 1982-02-05
    Beschreibung: Gene transfer and immunoselection were used in the identification of a BALB/c genomic clone containing an H-2Ld gene (clone 27.5). Transformation of thymidine kinase-negative C3H mouse L cells with the cloned 27.5 DNA together with the herpes simplex virus tk gene produced transformants expressing Ld molecules detected by radioimmune assay with monoclonal hybridoma antibodies to Ld antigens. The foreign Ld gene products expressed by cloned mouse L cell transformants were shown to be virtually indistinguishable from BALB/c spleen Ld molecules by two-dimensional electrophoretic analysis of H-2Ld immunoprecipitates. These results indicate that the genomic clone 27.5 contains a functional BALB/c H-2Ld gene and demonstrate the usefulness of this approach for identifying the gene products encoded by cloned genes which are members of a multigene family. Furthermore, the ability to place cell-surface recognition molecules on the surfaces of foreign cells provides a powerful opportunity for functional analyses of these molecules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goodenow, R S -- McMillan, M -- Orn, A -- Nicolson, M -- Davidson, N -- Frelinger, J A -- Hood, L -- CA 22662/CA/NCI NIH HHS/ -- CA 26199/CA/NCI NIH HHS/ -- GM 06965/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1982 Feb 5;215(4533):677-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7058331" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cells, Cultured ; Genes ; H-2 Antigens/*genetics ; Isoelectric Point ; L Cells (Cell Line) ; Mice ; Mice, Inbred BALB C/*genetics ; Transformation, Genetic
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  • 224
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-05-07
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kline, J -- New York, N.Y. -- Science. 1982 May 7;216(4546):564.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7071603" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alcoholic Beverages/*adverse effects ; Female ; Humans ; Pregnancy ; Pregnancy Complications/*chemically induced
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 225
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-11-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1982 Nov 5;218(4572):552-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123257" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Biological Evolution ; Genes ; *Genetics, Population
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 226
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-02-26
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Logeat, F -- Sartor, P -- Hai, M T -- Milgrom, E -- New York, N.Y. -- Science. 1982 Feb 26;215(4536):1134-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7063848" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Embryo Implantation ; Endometrium/*metabolism ; Female ; Pregnancy ; Rats ; Receptors, Estrogen/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 227
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-07-30
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1982 Jul 30;217(4558):434-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6283636" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; DNA, Recombinant ; *Gene Expression Regulation ; Genes ; Genes, Regulator ; *Mutation ; RNA, Messenger ; Simplexvirus/genetics ; Thymidine Kinase/genetics ; *Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 228
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-04-23
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1982 Apr 23;216(4544):400-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7071587" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cloning, Molecular/*methods ; Genes ; Humans ; *Major Histocompatibility Complex ; Mice
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 229
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-07-23
    Beschreibung: Transcriptional control signals of a model eukaryotic protein-coding gene have been identified by a new procedure of in vitro mutagenesis. This method allows small clusters of nucleotide residues to be substituted in a site-directed manner without causing the addition or deletion of other sequences. Transcription assays of a systematic series of these clustered point mutants have led to the identification of three distinct control signals located within the 105-nucleotide residues immediately upstream from the point where transcription begins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McKnight, S L -- Kingsbury, R -- New York, N.Y. -- Science. 1982 Jul 23;217(4557):316-24.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6283634" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; DNA, Recombinant ; *Gene Expression Regulation ; Genes ; Genes, Regulator ; *Mutation ; RNA, Messenger/analysis ; Simplexvirus/genetics ; Thymidine Kinase/genetics ; *Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 230
    Publikationsdatum: 1982-12-17
    Beschreibung: A 3.4-kilobase DNA fragment containing the gene coding for the E alpha chain of an Ia (I region-associated) antigen from the BALB/c mouse has been sequenced. It contains at least three exons, which correlate with the major structural domains of the E alpha chain-the two external domains alpha 1 and alpha 2, and the transmembrane-cytoplasmic domain. The coding sequence of the mouse E alpha gene shows striking homology to its counterpart at the DNA and protein levels. The translated alpha 2 exon demonstrates significant similarity to beta 2-microglobulin, to immunoglobulin constant region domains, and to certain domains of transplantation antigens. These observations and those of others suggest that the Ia antigen, transplantation antigen, and immunoglobulin gene families share a common ancestor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McNicholas, J -- Steinmetz, M -- Hunkapiller, T -- Jones, P -- Hood, L -- New York, N.Y. -- Science. 1982 Dec 17;218(4578):1229-32.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6815800" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Biological Evolution ; Genes ; *Genes, MHC Class II ; Macromolecular Substances ; Mice ; Mice, Inbred BALB C/*genetics ; beta 2-Microglobulin/genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 231
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-07-09
    Beschreibung: Prolactin administration reportedly increases blood pressure in rats and rabbits. To study the effects of prolactin deficiency on blood pressure, rats were given saline, normal rabbit serum, or rabbit antiserum to rat prolactin on postnatal days 2 to 5. Both males and females given antiserum had significantly lower blood pressure at 14 weeks than rats given saline or normal rabbit serum. Blood pressure differences between females given antiserum and females given saline disappeared during and following pregnancy. The antiserum also lowered the concentration of prolactin in plasma 49 percent in males and decreased the prolactin response to ether stress in both sexes. These results suggest that endogenous prolactin is involved in blood pressure regulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mills, D E -- Buckman, M T -- Peake, G T -- New York, N.Y. -- Science. 1982 Jul 9;217(4555):162-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089550" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn ; *Blood Pressure ; Female ; Immune Sera/pharmacology ; Male ; Pregnancy ; Pregnancy, Animal ; Prolactin/blood/immunology/*physiology ; Rabbits ; Rats ; Rats, Inbred Strains ; Sex Characteristics ; Sodium Chloride/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 232
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-02-05
    Beschreibung: The sequence of a gene, denoted 27.5, encoding a transplantation antigen for the BALB/c mouse has been determined. Gene transfer studies and comparison of the translated sequence with the partial amino acid sequence of the Ld transplantation antigen establish that gene 27.5 encodes an Ld polypeptide. A comparison of the gene 27.5 sequence with several complementary DNA sequences suggests that the BALB/c mouse may contain a number of closely related L-like genes. Gene 27.5 has eight exons that correlate with the structural domains of the transplantation antigen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moore, K W -- Sher, B T -- Sun, Y H -- Eakle, K A -- Hood, L -- 1 T32 GM07616/GM/NIGMS NIH HHS/ -- GM 06965/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1982 Feb 5;215(4533):679-82.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7058332" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; Cloning, Molecular/methods ; Genes ; H-2 Antigens/*genetics ; *Major Histocompatibility Complex ; Mice ; Mice, Inbred BALB C/*genetics ; Plasmids ; Repetitive Sequences, Nucleic Acid
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 233
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-05-07
    Beschreibung: The conformation and dynamics of the d(CGCGAATTCGCG) duplex, its analogs containing mismatched base pairs and helix interruptions, and its complexes with actinomycin and Netropsin, bound separately and simultaneously, have been investigated by nuclear magnetic resonance spectroscopy in aqueous solution. Structural information has been deduced from chemical shift and nuclear Overhauser effect parameters, while the kinetics have been probed from line width and saturation recovery experiments on proton and phosphorus markers at the individual base pair level. These studies lead to an improved understanding of the role of nucleic acid sequence on the structure, flexibility, and conformational interconversions in the duplex state. The nuclear magnetic resonance measurements readily identify helix modification and antibiotic binding sites on the nucleic acid and estimate the extent to which the observed conformational and dynamic perturbations are transmitted to adjacent base pair regions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Patel, D J -- Pardi, A -- Itakura, K -- New York, N.Y. -- Science. 1982 May 7;216(4546):581-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6280281" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; Dna ; Dactinomycin ; Hydrogen Bonding ; Magnetic Resonance Spectroscopy ; Motion ; Netropsin ; *Nucleic Acid Conformation ; Oligodeoxyribonucleotides ; Protons ; Structure-Activity Relationship ; Temperature
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 234
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-04-30
    Beschreibung: Treponema pallidum DNA was cloned in a bacteriophage. Clones were screened for expression of Treponema pallidum antigens by an in situ radioimmunoassay on nitrocellulose, with the use of subsequent reactions with syphilitic serum and radioiodinated Staphylococcus aureus protein A. One clone, which gave a strong signal, codes for at least seven antigens that react specifically with human antibodies to Treponema pallidum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walfield, A M -- Hanff, P A -- Lovett, M A -- New York, N.Y. -- Science. 1982 Apr 30;216(4545):522-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7041257" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Antigens, Surface/*genetics ; Cloning, Molecular/*methods ; Coliphages/genetics ; DNA, Recombinant ; Escherichia coli/genetics ; Gene Expression Regulation ; Genes ; Treponema pallidum/*immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 235
    Publikationsdatum: 1982-10-22
    Beschreibung: The protein coding region of the herpes simplex virus type-1 glycoprotein D (gD) gene was mapped, and the nucleotide sequence was determined. The predicted amino acid sequence of the gD polypeptide was found to contain a number of features in common with other virus glycoproteins. Insertion of this protein coding region into a bacterial expressor plasmid enabled synthesis in Escherichia coli of an immunoreactive gD-related polypeptide. The potential of this system for preparation of a type-common herpes simplex virus vaccine is discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, R J -- Weis, J H -- Salstrom, J S -- Enquist, L W -- New York, N.Y. -- Science. 1982 Oct 22;218(4570):381-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6289440" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Antigens, Viral/genetics ; Base Sequence ; Escherichia coli/genetics ; Gene Expression Regulation ; Genes ; Genes, Viral ; Glycoproteins/*genetics ; Peptides/genetics ; Protein Sorting Signals ; Simplexvirus/*genetics ; Viral Proteins/*genetics/immunology ; Viral Vaccines
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 236
    Publikationsdatum: 1983-10-28
    Beschreibung: Burkitt lymphoma cells carrying either a rearranged or unrearranged c-myc oncogene were examined with the use of probes from the 5' exon and for the second and third exon of the oncogene. The results indicate that the normal c-myc gene on chromosome 8 and the 5' noncoding and 3' coding segments of the c-myc oncogene separated by the chromosomal translocation are under different transcriptional control in the lymphoma cells. Burkitt lymphoma cells carrying a translocated but unrearranged c-myc oncogene express normal c-myc transcripts. In contrast, lymphoma cells carrying a c-myc gene rearranged head to head with the immunoglobulin constant mu region gene express c-myc transcripts lacking the normal untranslated leader.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉ar-Rushdi, A -- Nishikura, K -- Erikson, J -- Watt, R -- Rovera, G -- Croce, C M -- CA09171/CA/NCI NIH HHS/ -- CA10815/CA/NCI NIH HHS/ -- CA16685/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Oct 28;222(4622):390-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6414084" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Burkitt Lymphoma/*genetics ; Chromosomes, Human, 13-15 ; Chromosomes, Human, 19-20 ; Chromosomes, Human, 6-12 and X ; Gene Expression Regulation ; Genes ; Humans ; Immunoglobulin Heavy Chains/genetics ; *Oncogenes ; Operon ; Transcription, Genetic ; Translocation, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 237
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-08-26
    Beschreibung: One variant of a complex satellite DNA of the Bermuda land crab is significantly longer than the average repeat unit of the satellite. The extra DNA in the variant is accounted for by a fivefold tandem amplification of a 0.142-kilobase sequence. The amplified sequence is bounded by a tetranucleotide inverted repeat; the upstream arm of the inverted repeat is missing from two other variants of the satellite. The latter variants contain only one copy of a sequence that is closely related to the amplified sequence. By contrast, in several satellite DNA's of other organisms, extra DNA is inserted.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bonnewell, V -- Fowler, R F -- Skinner, D M -- New York, N.Y. -- Science. 1983 Aug 26;221(4613):862-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879182" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Brachyura/genetics ; Chromosome Inversion ; DNA, Satellite/*genetics ; *Gene Amplification ; Nucleic Acid Conformation
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 238
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-08-06
    Beschreibung: The sequence of two human beta-tubulin pseudogenes is described. One contains an intervening sequence but lacks sequences encoding the 55 N-terminal amino acids of the polypeptide chain. A second has no introns but has a polyadenylate signal and an oligoadenylate tract at its 3' end, and it is flanked by a short direct repeat. These sequences have arisen by different mechanisms, including one that probably involves reverse transcription of a processed messenger RNA and reintegration of the complementary DNA copy into the genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilde, C D -- Crowther, C E -- Cowan, N J -- GM26456/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 6;217(4559):549.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6178164" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; DNA/analysis ; DNA Restriction Enzymes ; DNA Transposable Elements ; DNA, Recombinant ; *Gene Expression Regulation ; Humans ; Nucleic Acid Hybridization ; Poly A/genetics ; RNA Splicing ; RNA-Directed DNA Polymerase/metabolism ; Recombination, Genetic ; Tubulin/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 239
    Publikationsdatum: 1983-07-15
    Beschreibung: The polymorphism of immune response genes plays a critical role in determining the immune capabilities of a particular individual. The molecular nature of this polymorphism was studied by examining the structure of the coding portions of three alleles of the I-A beta chain gene, an immune response gene whose protein product constitutes a subunit of the I-A molecule. Comparison of the I-A beta chains encoded by these alleles revealed an amino acid sequence divergence of 5 to 8 percent. The differences were found to be a series of short alterations clustered in the amino terminal half of the polypeptide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Choi, E -- McIntyre, K -- Germain, R N -- Seidman, J G -- AI18436/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 15;221(4607):283-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6407114" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Amino Acid Sequence ; Animals ; Base Sequence ; *Genes, MHC Class II ; Histocompatibility Antigens Class II/immunology ; Humans ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; *Polymorphism, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 240
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-03-11
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clarkson, A B Jr -- Mellow, G H -- AI 19015-02/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 11;219(4589):1238-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6402816" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Chagas Disease/*immunology ; Female ; Humans ; Lactation ; Pregnancy ; Rheumatoid Factor/*immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 241
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-07-01
    Beschreibung: Sea urchin histone genes contained in a recombinant plasmid pSp102 were microinjected into the cytoplasm of fertilized eggs of Xenopus laevis. By the late blastula stage, plasmid DNA sequences were detected comigrating with the high molecular weight cellular DNA (greater than 48 kilobases). Analysis of the DNA from injected embryos digested with various restriction endonuclease demonstrated that the injected DNA was integrated into the frog genome. Clones of embryos containing the pSp102 DNA sequences were produced by means of nuclear transplantation. Individuals of the same clone contain the pSp102 sequences integrated into similar chromosomal locations. These sites vary between different clones.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Etkin, L D -- Roberts, M -- GM31479-01/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 1;221(4605):67-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857265" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Clone Cells ; DNA, Recombinant/metabolism ; Genes ; Histones/*genetics ; *Nuclear Transfer Techniques ; Plasmids ; Sea Urchins/genetics ; Xenopus laevis/genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 242
    Publikationsdatum: 1983-02-25
    Beschreibung: The locus for the cellular myc (c-myc) oncogene in humans is located on the region of chromosome 8 that is translocated to chromosome 14 in cells from most undifferentiated B-cell lymphomas. It is shown in this study that the c-myc locus is rearranged in 5 out of 15 cell lines from patients with undifferentiated B-cell lymphomas, and that the rearrangement involves a region at the 5' side of an apparently intact c-myc gene. In at least three patients, this rearranged region appears to contain immunoglobulin heavy chain mu sequences that are located on chromosome 14. The data indicate that this region contains the crossover point between chromosomes 8 and 14. The break point can occur at different positions on both chromosomes among individual cell lines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dalla-Favera, R -- Martinotti, S -- Gallo, R C -- Erikson, J -- Croce, C M -- New York, N.Y. -- Science. 1983 Feb 25;219(4587):963-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6401867" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): B-Lymphocytes/*physiology ; Cell Differentiation ; Chromosome Mapping ; Gene Expression Regulation ; Genes ; Genetic Linkage ; Humans ; Immunoglobulin Constant Regions/genetics ; Immunoglobulin Heavy Chains/genetics ; Lymphoma/*genetics ; *Oncogenes ; Recombination, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 243
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-05-27
    Beschreibung: The utility of somatic cell genetic analysis for the chromosomal localization of genes in mammals is well established. With the development of recombinant DNA probes and efficient blotting techniques that allow visualization of single-copy cellular genes, somatic cell genetics has been extended from the level of phenotypes expressed by whole cells to the level of the cellular genome itself. This extension has proved invaluable for the analysis of genes not readily expressed in somatic cell hybrids and for the study of multigene families, especially pseudogenes dispersed in different chromosomes throughout the genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉D'Eustachio, P -- Ruddle, F H -- GM-09966/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 May 27;220(4600):919-24.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6573776" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; *Chromosome Mapping ; Chromosomes, Human ; Cricetinae ; Cricetulus ; DNA, Recombinant/metabolism ; Genes ; Genetic Markers ; Genetics ; Humans ; Hybrid Cells/metabolism ; Mice ; Polymorphism, Genetic ; RNA, Messenger/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 244
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-11-18
    Beschreibung: Class III genes require multiple cellular factors for transcription by RNA polymerase III; these genes form stable transcription complexes, which in the case of Xenopus 5S genes are correlated with differential expression in vivo. The minimal number and identity of the factors required to form both stable and metastable complexes on three class III genes (encoding, respectively, 5S RNA, transfer RNA, and adenovirus VA RNA species) were determined. Stable complex formation requires one common factor, whose recognition site was analyzed, and either no additional factors (the VA gene), a second common factor (the transfer RNA gene), or a third gene-specific factor (the 5S gene). The mechanism of stable complex formation and its relevance to transcriptional regulation were examined in light of the various factors and the promoter sequences recognized by these factors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lassar, A B -- Martin, P L -- Roeder, R G -- CA 24223/CA/NCI NIH HHS/ -- CA 24891/CA/NCI NIH HHS/ -- GM07200/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Nov 18;222(4625):740-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6356356" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; DNA-Directed RNA Polymerases/*genetics ; Eukaryotic Cells/physiology ; Gene Expression Regulation ; Genes ; Humans ; Operon ; RNA Polymerase III/*genetics ; RNA, Ribosomal/genetics ; RNA, Transfer/genetics ; RNA, Viral/genetics ; Transcription Factors/genetics ; *Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 245
    Publikationsdatum: 1983-08-19
    Beschreibung: Cloned myosin heavy chain DNA probes from rat and human were hybridized to restriction endonuclease digests of genomic DNA from somatic cell hybrids and their parental cells. The mouse myosin heavy chain genes detectable by this assay were located on chromosome 11, and three different human sarcomeric myosin heavy chain genes were mapped to the short arm of chromosome 17. A synteny between myosin heavy chain and two unrelated markers, thymidine kinase and galactokinase, was found to be preserved in the rodent and human genomes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leinwand, L A -- Fournier, R E -- Nadal-Ginard, B -- Shows, T B -- GM26449/GM/NIGMS NIH HHS/ -- GM29090/GM/NIGMS NIH HHS/ -- GM31281/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Aug 19;221(4612):766-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6879174" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Biological Evolution ; Chromosome Mapping ; Chromosomes, Human, 16-18 ; Genes ; Genetic Linkage ; Humans ; Mice ; Myosins/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 246
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-08-12
    Beschreibung: Placental and fetal tissues from 46 human pregnancies were cultured and cytogenetically analyzed in an attempt to document the existence of chromosomal mosaicism confined strictly to tissues of extraembryonic origin. In two gestations in which chromosomal mosaicism was found, it was expressed exclusively in placental chorionic cells and was not detected in cells derived from the embryo proper. This demonstration of confined chorionic mosaicism may have implications for the understanding of the fetoplacental unit and for prenatal diagnosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kalousek, D K -- Dill, F J -- New York, N.Y. -- Science. 1983 Aug 12;221(4611):665-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6867735" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amnion/physiology ; Chorion/physiology ; Chromosomes, Human ; Female ; Fetal Blood/physiology ; Fetal Growth Retardation/genetics ; Fetus/physiology ; Humans ; Male ; *Mosaicism ; Placenta/*physiology ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 247
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-08-19
    Beschreibung: Ia (I region-associated) antigens are cell-surface glycoproteins involved in the regulation of immune responsiveness. They are composed of one heavy (alpha) and one light (beta) polypeptide chain. We have sequenced the gene encoding the A beta d chain of the BALB/c mouse. The presence of six exons is predicted by comparison with the complementary DNA sequences of human beta chains and with partial protein sequence data for the A beta d polypeptide. Sequence comparisons have been made to other proteins involved in immune responses and the consequent implications for the evolutionary relationships of these genes are discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Malissen, M -- Hunkapiller, T -- Hood, L -- New York, N.Y. -- Science. 1983 Aug 19;221(4612):750-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6410508" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Biological Evolution ; Codon ; Genes ; *Genes, MHC Class II ; Macromolecular Substances ; Major Histocompatibility Complex ; Mice ; beta 2-Microglobulin/genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 248
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-01-07
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1983 Jan 7;219(4580):42-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6849114" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acquired Immunodeficiency Syndrome/genetics/*transmission ; Blood Transfusion/adverse effects ; Child ; Child, Preschool ; Female ; Hemophilia A/*complications ; Humans ; Infant ; Infant, Newborn ; Male ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 249
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-01-07
    Beschreibung: The immediate induction of the full complement of maternal behavior in nonpregnant ewes primed with estrogen and progesterone has been obtained after 5 minutes of vaginal-cervical stimulation. A similar period of such stimulation given to recently parturient ewes, after the development of selective bonding to their own lambs, reversed their rejection behavior of alien lambs and produced a state of plasticity in maternal behavior, such that ewes receiving vaginal stimulation would accept and adopt alien lambs. These findings implicate vaginal-cervical stimulation as playing a role in the onset of maternal behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keverne, E B -- Levy, F -- Poindron, P -- Lindsay, D R -- New York, N.Y. -- Science. 1983 Jan 7;219(4580):81-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6849123" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Estradiol/pharmacology ; Female ; *Maternal Behavior ; Pregnancy ; Progesterone/pharmacology ; Sheep/*physiology ; Time Factors ; Vagina/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 250
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-04-17
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berg, P -- Kornberg, R -- New York, N.Y. -- Science. 1981 Apr 17;212(4492):313-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209530" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; *Gene Expression Regulation ; *Genes ; RNA, Messenger/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 251
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-04-24
    Beschreibung: Five ICR-170--induced mutations at the His4 locus in yeast are +1 G.C (G, guanine; C, cytosine) additions in DNA regions that contain multiple G.C base pairs. These mutations represents both nonsuppressible and suppressible alleles. All externally, suppressible frameshift mutations occur in glycine and proline codons to produce the four-base codons GGGU (U, uracil), GGGG, and CCCU. This implies that suppression of these four-base codons in yeast, as in bacteria, involves a four-base anticodon or its functional equivalent. Two identical four-base codons (CCCU) at widely separate regions with His4 are not suppressed equally.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Donahue, T F -- Farabaugh, P J -- Fink, G R -- New York, N.Y. -- Science. 1981 Apr 24;212(4493):455-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7010605" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; *Codon ; DNA, Fungal/genetics ; Glycine/*genetics ; Histidine/genetics ; Mutation ; Proline/*genetics ; *RNA, Messenger ; Saccharomyces cerevisiae/*genetics ; *Suppression, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 252
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-06-05
    Beschreibung: A single recombinant lambda bacteriophage isolated from a human genome library contains two closely related human interferon genes of the leukocyte or alpha type. The two genes are separated by 12 kilobase pairs and are oriented in the same direction with respect to transcription. Comparisons of the DNA sequences of these two genes and interferon complementary DNA clones indicate that the two interferon genes lack intervening sequences.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lawn, R M -- Adelman, J -- Dull, T J -- Gross, M -- Goeddel, D -- Ullrich, A -- New York, N.Y. -- Science. 1981 Jun 5;212(4499):1159-62.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6165082" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Bacteriophage lambda/genetics ; Base Sequence ; DNA Restriction Enzymes ; DNA, Recombinant/*metabolism ; *Genes ; Humans ; Interferons/*genetics ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 253
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-04-03
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):28-30, 32.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209514" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; Cell Differentiation ; Chromatin/genetics ; DNA/genetics ; *Gene Expression Regulation ; Genes ; Operon ; RNA, Messenger/metabolism ; Ribonucleoproteins/genetics ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 254
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-05-08
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holden, C -- New York, N.Y. -- Science. 1981 May 8;212(4495):648-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7221549" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Abortion, Legal ; *Beginning of Human Life ; *Embryo, Mammalian ; *Embryo, Nonmammalian ; Federal Government ; Female ; Legislation as Topic ; *Life ; *Personhood ; Pregnancy ; United States ; Value of Life
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 255
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-07-24
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holden, C -- New York, N.Y. -- Science. 1981 Jul 24;213(4506):421.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244639" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Abortion, Legal ; *Ethics, Medical ; Female ; Humans ; Legislation, Medical ; Pregnancy ; United States
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 256
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-07-10
    Beschreibung: Female rats are masculinized in utero by male littermates sharing the same uterine horn. Increased anogenital distances in neonatal females and mounting behavior in adult females are related to the presence of males on the caudal side of the females in the uterine horn. Contrary to current beliefs, interamniotic diffusion may not be responsible for the exchange of masculinizing agents among fetuses. Since uterine blood flow in the rat is from the direction of the cervix toward the ovary, masculinizing hormones secreted by fetal males may be carried via the uterine vasculature to female littermates located further downstream.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meisel, R L -- Ward, I L -- HD-04688/HD/NICHD NIH HHS/ -- K2-MH00049/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 10;213(4504):239-42.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244634" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Androgens/*physiology ; Animals ; Castration ; Estradiol/pharmacology ; Female ; Fetus/*physiology ; Male ; Posture ; Pregnancy ; Progesterone/pharmacology ; Rats ; *Sex Characteristics/drug effects ; Sexual Behavior, Animal/drug effects ; Uterus/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 257
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-01-23
    Beschreibung: A mouse-human somatic cell hybrid clone, deficient in hypoxanthine-guanine phosphoribosyltransferase (HPRT) and containing a structurally normal inactive human X chromosome, was isolated. The hybrid cells were treated with 5-azacytidine and tested for the reactivation and expression of human X-linked genes. The frequency of HPRT-positives clones after 5-azacytidine treatment was 1000-fold greater than that observed in untreated hybrid cells. Fourteen independent HPRT-positive clones were isolated and analyzed for the expression of human X markers. Isoelectric focusing showed that the HPRT expressed in these clones is human. One of the 14 clones expressed human glucose-6-phosphate dehydrogenase and another expressed human phosphoglycerate kinase. Since 5-azacytidine treatment results in hypomethylation of DNA, DNA methylation may be a mechanism of human X chromosome inactivation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mohandas, T -- Sparkes, R S -- Shapiro, L J -- HD-04612/HD/NICHD NIH HHS/ -- HD-05615/HD/NICHD NIH HHS/ -- HD-12178/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1981 Jan 23;211(4480):393-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6164095" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Azacitidine/*pharmacology ; Base Sequence ; Cell Differentiation ; DNA/*metabolism ; Female ; Gene Expression Regulation/*drug effects ; Glucosephosphate Dehydrogenase/genetics ; Humans ; Hybrid Cells/physiology ; Hypoxanthine Phosphoribosyltransferase/genetics ; Methylation ; Mice ; *Sex Chromosomes ; *X Chromosome
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 258
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-03-20
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Naftolin, F -- New York, N.Y. -- Science. 1981 Mar 20;211(4488):1263-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209509" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Androgens/secretion ; Animals ; Estrogens/secretion ; Female ; Genes ; Humans ; Male ; Ovary/*physiology ; Reproduction ; *Sex Characteristics ; Sex Determination Analysis ; Sexual Behavior ; Spermatogenesis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 259
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-07-31
    Beschreibung: A plasmid DNA structure (approximate molecular weight = 7.5 X 10(6)) was identified in the human pathogen Treponema pallidum (Nichols). The inability to isolate this plasmid from rabbit host tissue and the total lack of DNA homology of the plasmid with rabbit DNA has confirmed its Treponema pallidum origin. The observation documents a newly recognized and potentially significant genetic capability for Treponema pallidum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Norgard, M V -- Miller, J N -- NIAID-12601/AI/NIAID NIH HHS/ -- NIAID-16692/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):553-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264606" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; DNA Restriction Enzymes ; DNA, Bacterial/*genetics ; DNA, Recombinant/metabolism ; Drug Resistance, Microbial ; Microscopy, Electron ; Molecular Weight ; Nucleic Acid Hybridization ; *Plasmids ; Protein Biosynthesis ; Rabbits ; Treponema pallidum/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 260
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-04-24
    Beschreibung: A secondary structure model for 16S ribosomal RNA which is based on available chemical, enzymatic, and comparative sequence data shows good agreement between constraints dictated by the model and a wide variety of experimental observations. The four major structural domains created by the base-pairing scheme correspond closely to RNA fragments isolated after nuclease digestion in the presence of bound ribosomal proteins. Functionally important sites appear to be located in unpaired regions and are phylogenetically highly conserved.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Noller, H F -- Woese, C R -- GM 17129/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1981 Apr 24;212(4493):403-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6163215" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; Binding Sites ; Biological Evolution ; Escherichia coli/ultrastructure ; Hydrogen Bonding ; Nucleic Acid Conformation ; Protein Binding ; *RNA, Bacterial ; *RNA, Ribosomal ; Ribonucleases/metabolism ; Ribosomal Proteins/metabolism ; Ribosomes/*ultrastructure ; Substrate Specificity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 261
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-01-02
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paigen, B -- New York, N.Y. -- Science. 1981 Jan 2;211(4477):6, 8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7444447" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Dicyclomine ; Doxylamine/*adverse effects ; Drug Combinations/adverse effects ; Female ; Humans ; New York ; Pregnancy ; Pyridines/*adverse effects ; Pyridoxine/*adverse effects ; *Teratogens ; United States ; United States Food and Drug Administration ; Water Pollutants/*adverse effects ; Water Pollutants, Chemical/*adverse effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 262
    Publikationsdatum: 1981-09-04
    Beschreibung: The arrangement of the human insulin gene in DNA from 87 individuals was analyzed by the Southern blot hybridization technique with a cloned genomic human insulin probe. Insertions of 1.5 to 3.4 kilobase pairs in the 5'-flanking region of the gene were found in DNA from 38 individuals. These insertions occurred within 1.3 kilobase pairs of the transcription initiation site. In contrast, no insertions were observed in the region 3' to the coding sequence. The prevalence of these insertions in type 2 diabetes was significantly greater than in the other groups (P less than .001). The limitation of this striking length polymorphism to a potential promoter region suggests that these insertions may play a role in insulin gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rotwein, P -- Chyn, R -- Chirgwin, J -- Cordell, B -- Goodman, H M -- Permut, M A -- AM-00033/AM/NIADDK NIH HHS/ -- AM-07120/AM/NIADDK NIH HHS/ -- AM-16724/AM/NIADDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Sep 4;213(4512):1117-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6267694" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; DNA Restriction Enzymes ; Diabetes Mellitus/*genetics ; Gene Expression Regulation ; Genes ; Genetic Linkage ; Humans ; Insulin/*genetics ; Leukocytes ; Operon ; Polymorphism, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 263
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-06-26
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, R J -- New York, N.Y. -- Science. 1981 Jun 26;212(4502):1485.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7015515" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Antiemetics/*therapeutic use ; Clinical Trials as Topic ; Dicyclomine ; Doxylamine/*therapeutic use ; Drug Combinations/therapeutic use ; Female ; Humans ; Infant Mortality ; Infant, Newborn ; Pregnancy ; Pregnancy Complications/*drug therapy ; Pyridines/*therapeutic use ; Pyridoxine/*therapeutic use
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 264
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-11-20
    Beschreibung: When two small doses of ethanol were administered to pregnant mice during the gastrulation stage of embryogenesis, the embryos developed craniofacial malformations closely resembling those seen in the human fetal alcohol syndrome. Striking histological changes appeared in the developing brain (neuroectoderm) within 24 hours of exposure. Decreased development of the neural plate and its derivatives apparently accounts for the craniofacial malformations. The critical exposure period is equivalent to the third week in human pregnancy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sulik, K K -- Johnston, M C -- Webb, M A -- DE 02668/DE/NIDCR NIH HHS/ -- DE 05906/DE/NIDCR NIH HHS/ -- RR 05333/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1981 Nov 20;214(4523):936-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6795717" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Child ; Disease Models, Animal ; Embryo, Mammalian/*drug effects/ultrastructure ; Ethanol/*pharmacology ; Eye Abnormalities ; Female ; Fetal Alcohol Spectrum Disorders/*physiopathology ; Humans ; Mice ; Mice, Inbred C57BL ; Microscopy, Electron, Scanning ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 265
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-07-24
    Beschreibung: Immunochemical investigations of the viral antigens and molecular characterization of the viral DNA have elucidated the nature of the hepatitis B virus infection underlying acute, chronic, and oncogenic disorders of the liver in man. Cloning and sequencing of viral DNA have made possible studies on the structure of the genome and on certain aspects of the biology of the virus, hitherto constrained for a lack of tissue culture systems and laboratory animal models useful in its propagation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tiollais, P -- Charnay, P -- Vyas, G N -- New York, N.Y. -- Science. 1981 Jul 24;213(4506):406-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264599" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; Cloning, Molecular ; DNA Restriction Enzymes ; Genes, Viral ; Hepatitis B/microbiology ; Hepatitis B Surface Antigens/*analysis ; Hepatitis B virus/*genetics/immunology ; Humans ; Viral Proteins
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 266
    Publikationsdatum: 1981-05-08
    Beschreibung: Normal pregnancies have been established in four women with tubal infertility by fertilization in vitro, embryo culture, and embryo transfer after stimulation of follicular growth with clomiphene citrate. In three of these women the time of oocyte maturation was controlled by human chorionic gonadotropin. This procedure for the control of ovulatory response has many advantages when compared with the previously successful method of using the natural ovulatory cycle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Trounson, A O -- Leeton, J F -- Wood, C -- Webb, J -- Wood, J -- New York, N.Y. -- Science. 1981 May 8;212(4495):681-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7221556" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Chorionic Gonadotropin/*pharmacology ; Clomiphene/*pharmacology ; *Embryo Transfer ; Female ; *Fertilization in Vitro ; Humans ; Infertility, Female/therapy ; Ovulation/*drug effects ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 267
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-04-02
    Beschreibung: One of six monoclonal antibodies raised against purified human placental alkaline phosphatase cross-reacts with the adult and fetal forms of intestinal alkaline phosphatase. The placental and intestinal enzymes are nonallelic. A new electrophoretic titration procedure was used to assess the relative reactivities of the different enzymes with the antibody. The placental enzyme was the most reactive. However, the adult intestinal enzyme showed greater reactivity than the fetal enzyme. The determinants to which the antibody binds on these three forms of alkaline phosphatase presumably differ in their detailed molecular configurations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gogolin, K J -- Wray, L K -- Slaughter, C A -- Harris, H -- GM07511/GM/NIGMS NIH HHS/ -- GM20138/GM/NIGMS NIH HHS/ -- GM27018/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1982 Apr 2;216(4541):59-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6175022" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alkaline Phosphatase/genetics/*immunology ; Alleles ; Antibodies, Monoclonal/*immunology ; Antibody Specificity ; Cross Reactions ; Epitopes ; Female ; Glycoproteins/*immunology ; Humans ; Intestines/enzymology ; Placenta/enzymology ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 268
    Publikationsdatum: 1982-04-16
    Beschreibung: We studied the relationship between cerebral oxygen consumption and cerebral oxygen delivery (cerebral blood flow x arterial oxygen content) in fetal, newborn, and adult sheep, Relative to the amount of oxygen consumed, cerebral oxygen delivery in the fetus exceeds that in the lamb and adult by 70 percent. This may represent a protective advantage for the fetus or simply a necessary adaptation to the low arterial oxygen pressure in the intrauterine environment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jones, M D Jr -- Rosenberg, A A -- Simmons, M A -- Molteni, R A -- Koehler, R C -- Traystman, R J -- HD-13830/HD/NICHD NIH HHS/ -- HL-10342/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1982 Apr 16;216(4543):324-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6801768" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn/*physiology ; Brain/*blood supply/*embryology ; Carbon Dioxide/blood ; Female ; Oxygen/*blood ; Oxygen Consumption ; Pregnancy ; Sheep
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 269
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-07-23
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G -- New York, N.Y. -- Science. 1982 Jul 23;217(4557):335.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7046049" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abnormalities, Drug-Induced/*epidemiology ; Animals ; Clinical Trials as Topic ; Dicyclomine ; Doxylamine/*adverse effects ; Drug Combinations/adverse effects ; Female ; Heart Septal Defects, Ventricular/chemically induced ; Hernia, Diaphragmatic/chemically induced ; Humans ; Macaca ; Pregnancy ; Pyridines/*adverse effects ; Pyridoxine/*adverse effects ; Rats ; United States ; United States Food and Drug Administration
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 270
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-10-22
    Beschreibung: Exogenous DNA sequences were introduced into the Drosophila germ line. A rosy transposon (ry1), constructed by inserting a chromosomal DNA fragment containing the wild-type rosy gene into a P transposable element, transformed germ line cells in 20 to 50 percent of the injected rosy mutant embryos. Transformants contained one or two copies of chromosomally integrated, intact ry1 that were stably inherited in subsequent generations. These transformed flies had wild-type eye color indicating that the visible genetic defect in the host strain could be fully and permanently corrected by the transferred gene. To demonstrate the generality of this approach, a DNA segment that does not confer a recognizable phenotype on recipients was also transferred into germ line chromosomes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rubin, G M -- Spradling, A C -- New York, N.Y. -- Science. 1982 Oct 22;218(4570):348-53.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6289436" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Chromosome Mapping ; *DNA Transposable Elements ; Drosophila/embryology/*genetics ; Genes ; Genetic Engineering/*methods ; Mutation ; Nucleic Acid Hybridization ; Plasmids ; *Transformation, Genetic ; Xanthine Dehydrogenase/genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 271
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-09-10
    Beschreibung: Foreign gene sequences were retained in two adult mice (out of 62 analyzed) from fertilized eggs injected with a recombinant plasmid containing the human beta-globin genomic region and the herpes simplex viral thymidine kinase gene. The intact human and viral genes were found in DNA of one of the animals and, in the other, at least part of the human globin gene was present. The latter individual transmitted these sequences to its progeny in a Mendelian ration. Thus, human DNA may be incorporated into the germ line of mice for in vivo studies of regulation of gene expression in development, genetic diseases, and malignancy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Steward, T A -- Wagner, E F -- Mintz, B -- CA-60927/CA/NCI NIH HHS/ -- HD-01646/HD/NICHD NIH HHS/ -- RR-05539/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1982 Sep 10;217(4564):1046-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6287575" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; DNA/genetics ; DNA Restriction Enzymes ; DNA, Recombinant ; Female ; Genes ; Genes, Viral ; Germ Cells ; Globins/*genetics ; Humans ; Mice ; Microinjections ; Nucleic Acid Hybridization ; *Recombination, Genetic ; Simplexvirus/enzymology ; Thymidine Kinase/genetics ; Zygote
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 272
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-10-22
    Beschreibung: Recombinant DNA carrying the 3-kilobase transposable element was injected into Drosophila embryos of a strain that lacked such elements. Under optimum conditions, half of the surviving embryos showed evidence of P element-induced mutations in a fraction of their progeny. Direct analysis of the DNA of strains derived from such flies showed them to contain from one to five intact 3-kilobase P elements located at a wide variety of chromosomal sites. DNA sequences located outside the P element on the injected DNA were not transferred. Thus P elements can efficiently and selectively transpose from extrachromosomal DNA to the DNA of germ line chromosomes in Drosophila embryos. These observations provide the basis for efficient DNA-mediated gene transfer in Drosophila.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spradling, A C -- Rubin, G M -- New York, N.Y. -- Science. 1982 Oct 22;218(4570):341-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6289435" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Chromosome Mapping ; *DNA Transposable Elements ; Drosophila melanogaster/*genetics ; Female ; Genes ; Genetic Linkage ; Hybridization, Genetic ; Male ; *Mutation ; Nucleic Acid Hybridization ; Recombination, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 273
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-05-21
    Beschreibung: Retroviruses have proved to be useful reagents for studying genetic and epigenetic (such as regulatory) changes in eukaryotic cells, for assessing functional and structural relationships between transposable genetic elements, for inducing insertional mutations, including some important in oncogenesis, and for transporting genes into eukaryotic cells, either after natural transduction of putative cellular oncogenes or after experimental construction of recombinant viruses. Many of these properties of retroviruses depend on their capacity to establish a DNA (proviral) form of their RNA genomes as a stable component of host chromosomes, in either somatic or germinal cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Varmus, H E -- New York, N.Y. -- Science. 1982 May 21;216(4548):812-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6177038" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; DNA Transposable Elements ; DNA, Viral/biosynthesis/genetics ; Gene Expression Regulation ; Genes, Viral ; Genetic Vectors ; Mutation ; RNA-Directed DNA Polymerase/metabolism ; Recombination, Genetic ; Repetitive Sequences, Nucleic Acid ; Retroviridae/*physiology ; Transcription, Genetic ; Virus Replication
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 274
    Publikationsdatum: 1983-11-04
    Beschreibung: The gene for glycoprotein D of herpes simplex virus type 1 (HSV-1) was expressed in stable mammalian cell lines. Glycoprotein D produced in these cells has a number of antigenic determinants in common with the native glycoprotein. Cell lines expressing glycoprotein D were used in an enzyme-linked immunosorbent assay to detect human antibodies to glycoprotein D. This strategy should prove useful in determining the extent to which the immune response to HSV-1 is directed toward glycoprotein D.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berman, P W -- Dowbenko, D -- Lasky, L A -- Simonsen, C C -- New York, N.Y. -- Science. 1983 Nov 4;222(4623):524-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6312563" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Antibodies, Viral/*analysis ; Base Sequence ; Cell Line ; Clone Cells ; DNA Restriction Enzymes ; DNA, Viral/genetics ; Enzyme-Linked Immunosorbent Assay ; *Genes ; *Genes, Viral ; Humans ; Plasmids ; Simplexvirus/genetics/*immunology ; Tetrahydrofolate Dehydrogenase/genetics ; *Viral Envelope Proteins ; Viral Proteins/*genetics/immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 275
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-11-25
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1983 Nov 25;222(4626):915.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6314505" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; *DNA Transposable Elements ; Viroids/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 276
    Publikationsdatum: 1983-08-26
    Beschreibung: The complete nucleotide sequence of the diphtheria tox228 gene encoding the nontoxic serologically related protein CRM228 has been determined. A comparison of the predicted amino acid sequence with the available amino acid sequences from the wild-type toxin made it possible to deduce essentially the entire nucleotide sequence of the wild-type tox gene. The signal peptide of pro-diphtheria toxin and the putative tox promoter have been identified, a highly symmetrical nucleotide sequence downstream of the toxin gene has been detected; this region may be the corynebacteriophage beta attachment site (attP). The cloned toxin gene was expressed at a low level in Escherichia coli.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaczorek, M -- Delpeyroux, F -- Chenciner, N -- Streeck, R E -- Murphy, J R -- Boquet, P -- Tiollais, P -- New York, N.Y. -- Science. 1983 Aug 26;221(4613):855-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6348945" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; Cloning, Molecular ; Diphtheria Toxin/*genetics ; Escherichia coli/genetics ; Gene Expression Regulation ; Genes ; Genes, Bacterial ; Nucleic Acid Conformation ; Operon
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  • 277
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-09-23
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1983 Sep 23;221(4617):1278-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6612341" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Cloning, Molecular ; Genes ; Receptors, Antigen, T-Cell/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 278
    Publikationsdatum: 1983-12-09
    Beschreibung: Antisera to human syncytiotrophoblast microvillous cell surface membranes from different placentas are cytotoxic for lymphocytes from some people but not others, demonstrating the presence of allotypic trophoblast-lymphocyte cross-reactive (TLX) antigens. Exploratory principal components factor analysis, performed on limited data consisting of 300 cytotoxic reactions produced by ten separate trophoblast antisera on a panel of lymphocytes from 30 random donors, suggested the presence of three distinct TLX antigen groupings. It is proposed that such TLX alloantigens are central in establishing maternal recognition and protection of the blastocyst, and that lack of recognition results in implantation failure and spontaneous abortion. These findings are compatible with contemporary results of immunotherapy to prevent recurrent spontaneous abortions, and their implications extend to other conditions of allogeneic coexistence, such as organ transplantation and the tumor-host relationship.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McIntyre, J A -- Faulk, W P -- Verhulst, S J -- Colliver, J A -- New York, N.Y. -- Science. 1983 Dec 9;222(4628):1135-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6648525" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Antigens, Surface/*immunology ; Cross Reactions ; Cytotoxicity, Immunologic ; Female ; Humans ; Lymphocytes/*immunology ; Maternal-Fetal Exchange ; Pregnancy ; Trophoblasts/*immunology
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  • 279
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-07-29
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G -- New York, N.Y. -- Science. 1983 Jul 29;221(4609):441.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6408734" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Female ; Fetus/*surgery ; Haplorhini ; Humans ; Neural Tube Defects/*surgery ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 280
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-06-24
    Beschreibung: Human G gamma-globin genes containing tandem duplications of the donor (5') or acceptor (3') RNA splice sites of the second intervening sequence were constructed in order to ascertain the directionality of RNA splice site selection. These genes were introduced into cultured monkey cells, and their transcripts were analyzed. Transcripts of these duplication variants were spliced only at the proximal copy of the duplicated splice sites. These data are consistent with a 5' leads to 3' model of splice site selection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lang, K M -- Spritz, R A -- AM28598/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1983 Jun 24;220(4604):1351-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6304877" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Cells, Cultured ; Globins/genetics ; Haplorhini ; Humans ; Plasmids ; *RNA Splicing ; RNA, Messenger/genetics/physiology ; Simian virus 40/genetics ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 281
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-07-29
    Beschreibung: Pregnant rats received 2-[14C]deoxy-D-glucose (2DG) intravenously on the last day of gestation, and their fetuses were delivered 1 hour later by cesarean section. Fetal brains showed high 2DG uptake spread throughout the accessory olfactory bulb and little or no differential uptake in the main olfactory bulb. These findings demonstrate that functional activity occurs in the accessory olfactory bulb in utero and suggest that the accessory olfactory system may be the pathway by which fetal rats detect the odor quality of their intrauterine milieu.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pedersen, P E -- Stewart, W B -- Greer, C A -- Shepherd, G M -- F32-NS06978/NS/NINDS NIH HHS/ -- NS 16993/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 29;221(4609):478-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6867725" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Autoradiography ; Brain/radionuclide imaging ; Deoxyglucose/metabolism ; Female ; Fetus/*physiology ; Olfactory Bulb/physiology/radionuclide imaging ; Pregnancy ; Rats ; Rats, Inbred Strains ; Smell/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 282
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-03-25
    Beschreibung: Quantitative electron microscopic analysis reveals 2.85 million retinal axons in fetal rhesus monkeys--a number that is more than twice the 1.2 million present in the adult. More than 1 million supernumerary optic axons are eliminated before birth, simultaneously with the segregation of inputs from the two eyes into separate layers of the lateral geniculate nucleus. Selective elimination of optic axons may not only play a role in the segregation of binocular visual connections but, secondarily, may establish the ratio of crossed and uncrossed retinogeniculate projections.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rakic, P -- Riley, K P -- EY02593/EY/NEI NIH HHS/ -- RR00168/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 25;219(4591):1441-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6828871" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Axons/*physiology/ultrastructure ; Female ; Fetus/physiology ; Macaca mulatta ; Optic Nerve/*embryology/ultrastructure ; Pregnancy ; Retina/*embryology/ultrastructure
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 283
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-07-08
    Beschreibung: The nucleotide sequence of the oncogene of the Rasheed strain of rat sarcoma virus was determined. The oncogene (Ra-v-ras) encodes a 29,000-dalton (p29) transforming protein. This protein is distinct from the immunologically related 21,000-dalton protein (p21) of the Harvey murine sarcoma virus in its amino terminus and in having additional mutations in its carboxyl terminus. Although the functional significance of these changes is unknown, they appear to occur only in rat sarcoma virus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rasheed, S -- Norman, G L -- Heidecker, G -- CA 27246/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 8;221(4606):155-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6344220" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; Mice ; Neoplasm Proteins/genetics ; *Oncogenes ; Proto-Oncogene Proteins p21(ras) ; Rats ; Retroviridae/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 284
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-05-27
    Beschreibung: Deoxyglucose labeled with carbon-14 was used in studying the utilization of glucose in the suprachiasmatic nuclei of fetal rats. The results showed that an entrainable circadian clock is present in the suprachiasmatic nuclei during fetal development and that the maternal circadian system coordinates the phase of the fetal clock to environmental lighting conditions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reppert, S M -- Schwartz, W J -- 1 K07 NS 00672/NS/NINDS NIH HHS/ -- HD 14427/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1983 May 27;220(4600):969-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6844923" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Circadian Rhythm ; Darkness ; Female ; Fetus/*physiology ; Gestational Age ; Glucose/metabolism ; Lighting ; *Maternal-Fetal Exchange ; Pregnancy ; Rats ; Suprachiasmatic Nucleus/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 285
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1983-06-03
    Beschreibung: The nucleotide sequence of the T24 human bladder carcinoma oncogene was determined, and the coding and noncoding sequences of the genome were identified. The amino acid sequence of p21, the translational product of the T24 oncogene, was predicted from the nucleotide sequence of the oncogene. Comparison of this sequence with that of the normal cellular homolog showed that a single point mutation in the coding sequences of the T24 oncogene resulted in the acquisition of transforming properties. Other differences between the T24 oncogene and its normal cellular homolog were found in the 5' noncoding and 3' noncoding sequences, but these differences appear to be due to polymorphism and do not play a significant role in the transformation process.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reddy, E P -- New York, N.Y. -- Science. 1983 Jun 3;220(4601):1061-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6844927" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; Carcinoma/*genetics ; Cell Transformation, Neoplastic/metabolism ; Humans ; Mice ; Neoplasm Proteins/genetics ; *Oncogenes ; Oncogenic Viruses/genetics ; Rats ; Urinary Bladder Neoplasms/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 286
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-07-31
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1981 Jul 31;213(4507):494, 496.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244648" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Beginning of Human Life ; Ethics, Medical ; Female ; *Fertilization ; Fetus ; Humans ; *Life ; Male ; *Personhood ; Pregnancy ; Value of Life
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 287
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-07-10
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1981 Jul 10;213(4504):154-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244627" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Beginning of Human Life ; Ethics ; Female ; *Fertilization ; Humans ; *Life ; Male ; Ovum/physiology ; *Personhood ; Pregnancy ; Spermatozoa/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 288
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-08-07
    Beschreibung: The eye can be visualized ultrasonically in more than 90 percent of fetuses 16 through 42 weeks of gestational age. Slow eye movements are present by 16 weeks. Rapid eye movements begin at 23 weeks and become more frequent between 24 and 35 weeks. Eye inactivity becomes more common after 36 weeks and is associated with sustained diaphragmatic excursions implying a "quiet sleep" state. Pathologic eye movements were seen in four fetuses with dysmorphic brain structure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Birnholz, J C -- New York, N.Y. -- Science. 1981 Aug 7;213(4508):679-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7256272" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Brain/abnormalities/embryology ; Eye/*embryology ; *Eye Movements ; Female ; Gestational Age ; Humans ; Pregnancy ; Sleep/physiology ; Ultrasonics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 289
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-10-16
    Beschreibung: An operon fusion of the lac genes to those required for synthesis of type 1 fimbriae (pili) has been achieved in a K12 strain of Escherichia coli lysogenized by the bacteriophage mu d (Ap4, lac). Synthesis of beta-galactosidase, therefore, reflected pil gene transcription and was used as a probe of fimbrial regulation. Expression of the operon fusion was found to oscillate, demonstrating that phase variation between fimbriate and nonfimbriate states is under transcriptional control. The transition rates from fimbriate to nonfimbriate were 1.05 X 10(-3) per bacterium per generation and from nonfimbriate to fimbriate, 3.12 X 10(-3) per bacterium per generation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eisenstein, B I -- AM-00686/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Oct 16;214(4518):337-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6116279" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Escherichia coli/*genetics/pathogenicity ; Fimbriae, Bacterial/*physiology ; *Gene Expression Regulation ; Genes ; Genes, Bacterial ; Genes, Regulator ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 290
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-06-19
    Beschreibung: A small portion of the cytosine residues in the DNA of higher eukaryotes as well as in that of many lowe eukaryotes if methylated. The resulting 5-methylcytosine residues occur in specific in the DNA, usually adjacent to guanine residues on the 3' side. This methylation of eukaryotic DNA has been proposed to function in many ways, including control of transcription, maintenance of chromosome structure, repair of DNA, establishment of preferred sites for mutation, oncogenic transformation, and, in certain systems, protection of DNA against enzymatic degradation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ehrlich, M -- Wang, R Y -- CA-19942/CA/NCI NIH HHS/ -- GM-26986/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 19;212(4501):1350-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6262918" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 5-Methylcytosine ; Animals ; Base Sequence ; Cytosine/*analogs & derivatives/analysis ; DNA/*genetics ; DNA Replication ; DNA Restriction Enzymes/metabolism ; *Genes ; Methylation ; Pyrimidines ; Species Specificity ; Substrate Specificity ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 291
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-12-11
    Beschreibung: Genetic material has been successfully transferred into the genomes of newborn mice by injection of that material into pronuclei of fertilized eggs. Initial results indicated two patterns of processing the injected DNA: one in which the material was not integrated into the host genome, and another in which the injected genes became associated with high molecular weight DNA. These patterns are maintained through further development to adulthood. The evidence presented indicates the covalent association of injected DNA with host sequences, and transmission of such linked sequences in a Mendelian distribution to two succeeding generations of progeny.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gordon, J W -- Ruddle, F H -- GMO7959-01/GM/NIGMS NIH HHS/ -- GMO9966/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1981 Dec 11;214(4526):1244-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6272397" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Nucleus/*metabolism ; Crosses, Genetic ; DNA Restriction Enzymes ; DNA, Recombinant/*metabolism ; Embryo, Mammalian/*physiology ; Female ; *Genes ; Genetic Linkage ; Herpesviridae/enzymology ; Male ; Mice ; Nucleic Acid Hybridization ; Ovum/*physiology ; *Plasmids ; Pregnancy ; Sex Ratio ; Simian virus 40/enzymology ; Thymidine Kinase/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 292
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-11-06
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G B -- New York, N.Y. -- Science. 1981 Nov 6;214(4521):642-3, 645.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7197392" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abortion, Spontaneous/chemically induced ; *Ethanol ; Female ; Humans ; Infant, Low Birth Weight ; Infant, Newborn ; Pregnancy ; Pregnancy Complications/*chemically induced
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 293
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-07-24
    Beschreibung: Perinatal morbidity and mortality are associated with colonization of the chorionic surface of the placenta by Ureaplasma urealyticum or Mycoplasma hominis or both. These organisms are more strongly associated with unfavourable gestational outcome than group B streptococci. Chlamydia trachomatis does not appear to be important in the etiology of reproductive casualties. The mechanisms linking the mycoplasmas to perinatal disorders and death are not clear but merit investigation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kundsin, R B -- Driscoll, S G -- Pelletier, P A -- HD 10984/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 24;213(4506):474-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244646" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Critical Care ; Female ; *Fetal Death ; Humans ; *Infant Mortality ; Infant, Newborn ; Infant, Newborn, Diseases/*microbiology ; Mycoplasma/*pathogenicity ; Mycoplasma Infections/*complications ; Placenta/microbiology ; Pregnancy ; Ureaplasma/*pathogenicity
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 294
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-03-27
    Beschreibung: In ovariectomized rats treated with progesterone, implantation was induced by a minute dose of 17 beta-estradiol. Twenty-four hours later, the concentrations of estradiol receptor in nuclear and cytosol fractions prepared from the endometrium surrounding the blastocyst and the inter-implantation areas remained very low. This indicates that estrogen was not secreted by the blastocyst. The higher receptor content in cytosol from inter-implantation sites may reflect modifications accompanying the decidual reaction since our results show that there is no translocation of the receptor to the nuclei. The choice of the dye used to reveal the implantation sites is critical, since Trypan blue but not Evans blue binds steroids and thereby interferes with receptor measurements.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martel, D -- Psychoyos, A -- New York, N.Y. -- Science. 1981 Mar 27;211(4489):1454-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7466405" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Blastocyst/secretion ; Castration ; Cell Nucleus/analysis ; Cytoplasm/analysis ; *Embryo Implantation ; Endometrium/*analysis ; Estradiol/pharmacology ; Estrogens/secretion ; Evans Blue/metabolism ; Female ; Pregnancy ; Progesterone ; Rats ; Receptors, Estrogen/*analysis ; Trypan Blue/metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 295
    Publikationsdatum: 1981-09-25
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Putney, S D -- Royal, N J -- Neuman de Vegvar, H -- Herlihy, W C -- Biemann, K -- Schimmel, P -- GM05472/GM/NIGMS NIH HHS/ -- GM23562/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1981 Sep 25;213(4515):1497-501.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7025207" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alanine-tRNA Ligase/*genetics ; Amino Acid Sequence ; Amino Acyl-tRNA Synthetases/*genetics ; Base Sequence ; Escherichia coli/*enzymology ; Genes ; Mass Spectrometry ; Peptide Fragments/analysis
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 296
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-01-23
    Beschreibung: About 17,000 bovine pregnancies were produced by superovulation and embryo transfer in North America in 1979. The major use of these techniques is to increase the reproductive rate of valuable cows. Other applications include circumventing infertility, exporting embryos, and testing potential carriers for Mendelian recessive alleles. Cryopreservation of embryos is beginning to be used commercially, and sexing embryos before transfer may soon become routine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Seidel, G E Jr -- New York, N.Y. -- Science. 1981 Jan 23;211(4480):351-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7194504" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animal Husbandry/*methods ; Animals ; Cattle/*physiology ; *Embryo Transfer ; Female ; Industry ; *Ovulation ; Pregnancy ; *Pregnancy, Animal ; Reproduction ; Time Factors
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 297
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-06-19
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, R J -- New York, N.Y. -- Science. 1981 Jun 19;212(4501):1372-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233224" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Abortion, Induced ; *Ethics, Medical ; Federal Government ; Female ; Humans ; Legislation, Medical ; Personhood ; Pregnancy ; United States
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 298
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1981-07-24
    Beschreibung: The nucleotide sequence of the 1413-base-pair repeat unit of bovine 1.711a satellite DNA (density in cesium chloride, 1.711 grams per cubic centimeter) has been determined. The repeat unit contains two segments consisting of variants of a basic 23-base-pair sequence that is closely related to sequences of bovine 1.706 satellite DNA. A third segment of the repeat unit contains an unrelated 611-base-pair sequence that is not internally repetitive. This segment is flanked by inverted repeats of 8 base pairs and, on one side, by a direct repeat of the terminal sequence. A related segment is present in bovine 1.711b satellite DNA and is inserted into sequences derived from the 1.715 satellite. These nucleotide sequences suggest the timing of some of the stages in the evolution of these complex, closely related satellite DNA's and indicate the mechanisms inherent in their divergence from a common ancestor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Streeck, R E -- New York, N.Y. -- Science. 1981 Jul 24;213(4506):443-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264600" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Composition ; Base Sequence ; Cattle ; DNA Replication ; DNA Restriction Enzymes ; DNA, Satellite/*genetics ; Thymus Gland
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 299
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-10-01
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1982 Oct 1;218(4567):6, 8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123219" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Child ; Female ; Humans ; Iodine Radioisotopes/*adverse effects ; Nuclear Reactors ; Potassium Iodide/*therapeutic use ; Pregnancy ; Thyroid Gland/metabolism ; United States ; United States Food and Drug Administration
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 300
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    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1982-10-29
    Beschreibung: Pregnant Swiss Webster mice were fed a diet moderately deficient in zinc from day 7 of gestation until parturition. Offspring of these mice showed depressed immune function through 6 months of age. In addition, the second and third filial generations, all of which were fed only the normal control diet, continued to manifest reduced immunocompetence, although not to the same degree as in the first generation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beach, R S -- Gershwin, M E -- Hurley, L S -- New York, N.Y. -- Science. 1982 Oct 29;218(4571):469-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123244" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antibody Formation ; Female ; Immune Tolerance ; Immunoglobulin M/analysis ; Immunologic Deficiency Syndromes/*embryology ; Mice ; Pregnancy ; Time Factors ; Zinc/*deficiency
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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