Abstract:Mammalian oocytes are surrounded by cumulus cells, forming a structure known as the cumulus-oocyte complex (COC). Cumulus cells play important protective functions during oocyte maturation, for example, protecting the oocyte against reactive oxygen species. However, it is not yet fully understood how the cumulus complex modulates the developmental competence of the enclosed oocyte. It was investigated whether direct contact between an oocyte and its cumulus cells is essential throughout the maturation process.… Show more
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