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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1988-9-7
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pubmed:abstractText |
Protein antigens accumulated in the oocyte nucleus of Xenopus spp. are found later in all nuclei of the embryo. During and after organogenesis, the fate of different nuclear antigens diverges: Some are permanently expressed in all nuclei, some are no longer detectable in any nuclei, and some show a high degree of specificity relative to cell type. Of the class of antigens permanently expressed in all cells, a nucleolar antigen has been studied that is relatively enriched in the gonia of both sexes. A possible correlations of its occurrence with ribosomal DNA amplification and transcription is examined. The cell-specific expression of 4 antigens has been analyzed in detail, using indirect immunofluorescent staining methods as well as conventional histology. The tissue-specificity of 2 of these antigens does not change during metamorphosis, whereas the pattern of others is dynamic until after metamorphosis. We conclude that the observed tissue-specificity does not correlate with descendence from one of the 3 primary germ layers: Some antigens appear to accumulate in the nucleus when a cell takes up its specific function.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Jun
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pubmed:issn |
0302-766X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
252
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
479-89
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:3293792-Aging,
pubmed-meshheading:3293792-Animals,
pubmed-meshheading:3293792-Cell Nucleolus,
pubmed-meshheading:3293792-DNA,
pubmed-meshheading:3293792-Embryo, Nonmammalian,
pubmed-meshheading:3293792-Female,
pubmed-meshheading:3293792-Fluorescent Antibody Technique,
pubmed-meshheading:3293792-Male,
pubmed-meshheading:3293792-Nuclear Proteins,
pubmed-meshheading:3293792-Nucleic Acid Hybridization,
pubmed-meshheading:3293792-Organ Specificity,
pubmed-meshheading:3293792-Tritium,
pubmed-meshheading:3293792-Xenopus,
pubmed-meshheading:3293792-Xenopus laevis
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pubmed:year |
1988
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pubmed:articleTitle |
Cell specificity of nuclear protein antigens in the development of Xenopus species.
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pubmed:affiliation |
Max-Planck-Institut für Entwicklungsbiologie, Abteilung für Zellbiologie, Tübingen, Federal Republic of Germany.
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pubmed:publicationType |
Journal Article
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