Is it possible to retrieve eggs from a post menopausal woman?

Retrieving eggs from a postmenopausal woman is generally not possible because menopause signifies the end of a woman's reproductive years, marked by a significant decline in ovarian function and the depletion of viable eggs. However, in some rare cases, there may be ovarian tissue or immature eggs that could potentially be retrieved for experimental purposes, but this is not a standard or reliable method. Most fertility treatments rely on women who have not yet reached menopause.