Towards a new understanding on the regulation of mammalian oocyte meiosis resumption

Abstract excerpt

Mammalian oocytes reach prophase of first meiosis around the time of birth, and remain at this stage for months or years, depending on the species. Only after puberty will the fully-grown oocytes begin to resume meiosis which is stimulated by gonadotropin surge. It has long been known that a high level of intra-oocyte cyclic adenosine 3',5'-monophosphate (cAMP) prevents oocyte meiosis resumption as indicated by...

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