| Ultrastructure of a two-cell human embryo. | |
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MedLine Citation:
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PMID: 3439640 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A two-cell human embryo recovered from the Fallopian tube 82 h following the LH peak in plasma and 37 h after a single episode of intercourse was examined by transmission electron microscopy. At the time of recovery the embryo was denuded of cumulus cells, and both the zona pellucida and the two adjoining blastomeres were intact. The finding of two polar bodies in the perivitelline space, two nucleated blastomeres and remnants of the fertilizing sperm tail within the cytoplasm of one of them, were considered as evidences that the embryo was normally fertilized. Among the most conspicuous features found were the presence of very distinct desmosome-like structures between blastomeres, and the cytoplasmic cell organelles distribution in three areas referred as: a sub-cortical, a middle and a perinuclear bands. An outstanding feature was the extensive blebbing of the nuclear envelope. In general, the features seem to correspond to a normally developing two-cell embryo undergoing cleavage at a normal rate. |
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Authors:
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J Pereda; M Coppo |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Anatomy and embryology Volume: 177 ISSN: 0340-2061 ISO Abbreviation: Anat. Embryol. Publication Date: 1987 |
Date Detail:
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Created Date: 1988-04-01 Completed Date: 1988-04-01 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 7505194 Medline TA: Anat Embryol (Berl) Country: GERMANY, WEST |
Other Details:
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Languages: eng Pagination: 91-6 Citation Subset: IM |
Affiliation:
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Laboratorio de Embriologia, Facultad de Medicina, Universidad de Chile, Santiago. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Blastomeres
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ultrastructure* Cleavage Stage, Ovum / ultrastructure* Desmosomes / ultrastructure Humans Insemination Organoids / ultrastructure |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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