| Ultrastructural and cytochemical studies on nucleolus-like bodies in early postimplantation rat embryos. | |
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MedLine Citation:
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PMID: 6181892 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Fibrillar cytoplasmic bodies, generally referred to as nucleolus-like bodies (NLBs), have been observed in the embryonic ectodermal cells of early postimplantation rat embryos. The NLBs are not delineated by a membrane, and consist of 5-7 nm filaments. The diameter of the NLBs varies widely, but 0.7-1.2 micrometer is common. Small NLBs are frequently present in the vicinity of the nucleus, suggesting that the filamentous elements of the NLBs may originate from there, and also that these filaments may gradually gather and grow into the NLBs in the cytoplasm. Enzymatic treatment of ultrathin sections obtained from glycol methacrylate-embedded material reveal that a large part of NLBs is removed by digestion with pepsin or pronase, but that various fibrous materials remaining are sensitive to RNase digestion and stained with Bernhard's uranyl-EDTA method. These findings indicate that the NLBs consist of ribonucleoprotein. |
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Authors:
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I K Takeuchi; Y K Takeuchi |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Cell and tissue research Volume: 226 ISSN: 0302-766X ISO Abbreviation: Cell Tissue Res. Publication Date: 1982 |
Date Detail:
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Created Date: 1982-12-18 Completed Date: 1982-12-18 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0417625 Medline TA: Cell Tissue Res Country: GERMANY, WEST |
Other Details:
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Languages: eng Pagination: 257-66 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cytoplasmic Granules / physiology, ultrastructure* Ectoderm / ultrastructure* Embryo, Mammalian Female Histocytochemistry Nucleic Acids / analysis Pregnancy Rats Rats, Inbred Strains Staining and Labeling |
| Chemical | |
Reg. No./Substance:
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0/Nucleic Acids |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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