In the female reproductive system ovarian follicles are the basic unit of the ovary, consisting of an immature egg, known as an oocyte, surrounded by granulosa cells. Besides being crucial to the development of follicles, studies have shown granulosa cells possess plasticity exhibiting stem cell-like properties. Made-to-order oocytes have great potential for preserving fertility and restoring ovarian function, however, it is still unclear whether functional … Continue reading Mice born from eggs derived from the granulosa cells surrounding oocytes.