Thecal vasculature and oocyte maturation during follicular atresia in the sheep and pig

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Thecal vasculature and oocyte maturation during follicular atresia in the sheep and pig.

During follicular atresia in the sheep and pig there is a marked reduction in the vasculature of the theca interna underlying the membrana granulosa. In the sheep there is no reduction of thecal blood vessels adjacent to the cumulus which remains viable. By contrast, in the pig the cumulus degenerates during atresia and the underlying thecal vasculature is greatly diminished. However, despite l...

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Increased oocyte degeneration and follicular atresia during the estrous cycle in anti-Müllerian hormone null mice.

Anti-Müllerian hormone (AMH) plays an important role in folliculogenesis. AMH null mice display an increased recruitment of primordial follicles. Nevertheless, these mice do not have proportionally more preovulatory follicles. Therefore, AMH null mice provide an interesting genetic model to study the regulation of species-specific number of preovulatory follicles. We studied the follicle pool t...

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ژورنال

عنوان ژورنال: Reproduction Nutrition Développement

سال: 1983

ISSN: 0181-1916

DOI: 10.1051/rnd:19830212