๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Preovulatory changes in cumulus-oocyte complex of the hamster

โœ Scribed by Leibfried, M. Lorraine ;First, Neal L.

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
993 KB
Volume
202
Category
Article
ISSN
0003-276X

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โœฆ Synopsis

Abstract

An orderly series of associations was found between the cumulus and the stages of nuclear development in the hamster oocyte as the oocytecumulus complex underwent preovulatory maturation. Ten hours prior to ovulation meiotic resumption was first seen in the oocyte. The onset of cumulus dissociation with corresponding morphological changes in cumulus cells was observed eight hours prior to ovulation. Completion of the first meiotic division in the oocyte and full cumulus dissociation occurred 2 hours prior to ovulation. Cumulus dissociation was found to occur only in vesicular follicles destined to ovulate and not in follicles undergoing atresia. Cells with large vacuolar inclusions with distorted, hyperchromatic nuclei were found in the maturing cumulus.

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