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  • 1
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2017-04-15
    Keywords: Essays
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-12-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gearhart, J -- New York, N.Y. -- Science. 1998 Nov 6;282(5391):1061-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Gynecology and Obstetrics, Johns Hopkins Medicine, Baltimore, MD 21287, USA. gearhart@jhmi.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9841453" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blastocyst/*cytology ; *Cell Culture Techniques ; Cell Differentiation ; *Cell Line ; Cell Lineage ; *Embryo Research ; Embryo, Mammalian/*cytology ; Federal Government ; Germ Cells/*cytology ; Government Regulation ; Guidelines as Topic ; Humans ; Major Histocompatibility Complex ; Mice ; Research Support as Topic ; Risk Assessment ; Stem Cell Transplantation ; Stem Cells/*cytology ; Transplantation Immunology ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-04-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Solter, D -- Gearhart, J -- New York, N.Y. -- Science. 1999 Mar 5;283(5407):1468-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology, Max Planck Institute of Immunology, Freiburg, Germany. solter@immunbio.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10206877" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bioethics ; Blastocyst/*cytology ; *Cell Differentiation ; Cell Line ; Cells, Cultured ; Cloning, Organism ; Cytoplasm/physiology ; Embryo, Mammalian/cytology ; Humans ; Mice ; Nuclear Transfer Techniques ; Stem Cells/*cytology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2011-02-12
    Description: Memory B cells formed in response to microbial antigens provide immunity to later infections; however, the inability to detect rare endogenous antigen-specific cells limits current understanding of this process. Using an antigen-based technique to enrich these cells, we found that immunization with a model protein generated B memory cells that expressed isotype-switched immunoglobulins (swIg) or retained IgM. The more numerous IgM(+) cells were longer lived than the swIg(+) cells. However, swIg(+) memory cells dominated the secondary response because of the capacity to become activated in the presence of neutralizing serum immunoglobulin. Thus, we propose that memory relies on swIg(+) cells until they disappear and serum immunoglobulin falls to a low level, in which case memory resides with durable IgM(+) reserves.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3993090/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3993090/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pape, Kathryn A -- Taylor, Justin J -- Maul, Robert W -- Gearhart, Patricia J -- Jenkins, Marc K -- F32 AI091033/AI/NIAID NIH HHS/ -- R01 AI036914/AI/NIAID NIH HHS/ -- R01 AI039614/AI/NIAID NIH HHS/ -- R37 AI027998/AI/NIAID NIH HHS/ -- T32 CA009138/CA/NCI NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2011 Mar 4;331(6021):1203-7. doi: 10.1126/science.1201730. Epub 2011 Feb 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Center for Immunology, University of Minnesota Medical School, Minneapolis, MN 55455, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21310965" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens/immunology ; Antigens, CD38/analysis ; B-Lymphocyte Subsets/*immunology ; Cell Survival ; Female ; Germinal Center/cytology/immunology ; Immunization ; *Immunoglobulin Class Switching ; Immunoglobulin M/genetics/*immunology ; *Immunologic Memory ; Lymph Nodes/cytology/immunology ; Lymphocyte Activation ; Male ; Mice ; Mice, Inbred C57BL ; Mutation ; Phycocyanin/immunology ; Phycoerythrin/immunology ; Spleen/cytology/immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2005-07-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Greene, Mark -- Schill, Kathryn -- Takahashi, Shoji -- Bateman-House, Alison -- Beauchamp, Tom -- Bok, Hilary -- Cheney, Dorothy -- Coyle, Joseph -- Deacon, Terrence -- Dennett, Daniel -- Donovan, Peter -- Flanagan, Owen -- Goldman, Steven -- Greely, Henry -- Martin, Lee -- Miller, Earl -- Mueller, Dawn -- Siegel, Andrew -- Solter, Davor -- Gearhart, John -- McKhann, Guy -- Faden, Ruth -- New York, N.Y. -- Science. 2005 Jul 15;309(5733):385-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Philosophy, University of Delaware, Newark, DE 19716, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16020716" target="_blank"〉PubMed〈/a〉
    Keywords: Advisory Committees ; Animal Experimentation/*ethics ; Animals ; Brain/anatomy & histology/physiology ; Cell Line ; *Ethics, Research ; Humans ; Mental Processes ; Moral Obligations ; *Morals ; Neurons/cytology/physiology/*transplantation ; *Primates/psychology ; Stem Cell Transplantation/*ethics ; Transplantation Chimera ; Transplantation, Heterologous/*ethics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Developmental Biology 85 (1981), S. 199-208 
    ISSN: 0012-1606
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Quantitative Spectroscopy and Radiative Transfer 8 (1968), S. 1731 
    ISSN: 0022-4073
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Quantitative Spectroscopy and Radiative Transfer 4 (1964), S. 9-28 
    ISSN: 0022-4073
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1617-4623
    Keywords: Keywords RNA polymerase II ; CTD domain ; Deletion mutants ; Transgenic mice ; Growth retardation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The C-terminal domain (CTD) of the largest subunit of RNA polymerase II consists of tandem repeats of the consensus heptapeptide YSPTSPS. Deletion studies in tissue culture cells have indicated that the CTD plays an essential role in transcription, although the nature of this essential function remains unclear. About half of the CTD can be deleted without affecting the viability of cells in tissue culture. Paradoxically, the dispensable CTD repeats are precisely conserved among all mammals whose CTD sequences are known. To determine whether the mammalian CTD is important in transcription during mouse development, we developed a gene targeting approach to introduce deletions into the CTD coding region of mouse embryonic stem (ES) cells. To maintain a functional Rpo2-1 gene, the neo marker in the targeting vector was positioned outside of the Rpo2-1 transcribed region, 1.2 kb from the site of the CTD deletion. G418-resistant clones were screened for co-integration of the CTD deletion, and the resulting ES lines were used to create germline chimeric mice. Stable heterozygous lines were established and mated to produce animals homozygous for the CTD deletion. We show here that mice homozygous for a deletion of thirteen of the 52 heptapeptide repeats are smaller than wild-type littermates and have a high rate of neonatal lethality. Surviving adults, although small, appear morphologically normal and are fertile. This result suggests that the CTD plays a role in regulating growth during mammalian development. The gene targeting approach described here should be useful for making further deletions in the CTD and may be of general applicability where it is desirable to engineer specific mutations in the germline of mice.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract An analysis was performed of a large epidemiological study conducted in New Zealand to evaluate the neurological effects of prenatal methylmercury (MeHg) exposure in children. In the epidemiological study, 6-year-old children, whose mothers had been exposed to MeHg through the consumption of fish, were administered performance tests to ascertain academic attainment, language development, fine and gross motor coordination, intelligence and social adjustment. These responses were correlated with estimates of prenatal exposure based on average maternal hair concentrations during pregnancy. The Benchmark Dose analysis performed in the current study suggests that the NOAEL for the most sensitive indicator of developmental effects (Test of Language Development — grammar understanding) occurs at approximately 17 ppm Hg in maternal hair. A physiologically based pharmacokinetic (PBPK) model for MeHg was developed which coherently described MeHg pharmacokinetics in the adult rat, monkey and man, and predicts fetal levels of MeHg fromin utero exposure. The model includes a description of enterohepatic recirculation of MeHg, conversion to inorganic mercury in tissues and intestinal flora, slowly reversible incorporation of mercury in tissues, and excretion of both organic and inorganic mercury into urine, feces, and hair. Analysis with the PBPK model indicates that fetal brain concentrations of MeHg at the NOAEL are on the order of 50 ppb (μg/L), and are associated with maternal dietary intakes of MeHg ranging from 0.8 to 2.5μg/kg/day. Since this analysis is based on the most sensitive endpoint in a large, general human population, no uncertainty factor should be necessary using the standard USEPA approach for setting RfDs. Therefore, the RfD suggested by this analysis would be a factor of from 3 to 8 above the current USEPA RfD of 0.3μg/kg/day.
    Type of Medium: Electronic Resource
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