ULTRASTRUCTURE OF A SEVEN-CELL HUMAN EMBRYO

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dc.contributor.authorPEREDA, J
dc.contributor.authorCROXATTO, HB
dc.date.accessioned2025-01-23T19:44:48Z
dc.date.available2025-01-23T19:44:48Z
dc.date.issued1978
dc.description.abstractThe ultrastructural features of a 7-cell human embryo recovered from the oviduct were described. Two adjoining blastometers located in the periphery exhibited greater electron density than the others and gave a metachromatic reaction with toluidine blue. A distinct junctional complex was observed at the external border between a dark and a light cell, but most areas of cell contact were devoid of visible membrane differentiations. Organelles were found unevenly distributed in the cytoplasm and appeared to be in a more advanced stage of development in the dark blastomeres. Endoplasmic reticulum cisternae tended to accumulate between a subcortical and a perinuclear band, whereas large vesicles were present in the subcortical area. Mitochondria were distributed throughout the cytoplasm but definitely in greater numbers at 1 pole of the cells. Extensive blebbing of the nuclear envelope was seen in some nuclei. Numerous groups of vesicles and small corpuscles were present in the matrix of the zona pellucida. In general, the features described were consonant with those found in eggs of other mammals.
dc.fuente.origenWOS
dc.identifier.eissn1529-7268
dc.identifier.issn0006-3363
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100129
dc.identifier.wosidWOS:A1978EV03600022
dc.issue.numero3
dc.language.isoen
dc.pagina.final489
dc.pagina.inicio481
dc.revistaBiology of reproduction
dc.rightsacceso restringido
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleULTRASTRUCTURE OF A SEVEN-CELL HUMAN EMBRYO
dc.typeartículo
dc.volumen18
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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