Does ovarian follicles contain mature eggs?

Ovarian follicles contain developing eggs, or oocytes, but not all follicles contain mature eggs. As a female matures, some follicles grow and develop, with only one typically becoming the dominant follicle that releases a mature egg during ovulation. Other follicles may degenerate or become atretic. Therefore, while follicles contain eggs, only certain ones will reach maturity and be released.