Now, these oocides, the primary oocides, do not exist as individual cells. Instead these Oocides are found inside these fluid filled structures known as Ovarian follicles. So an Ovarian follicle is the fluid filled structure found inside the Ovary that contains not only that developing Oicide but it also contains important cells, other different types of cells that also assist in the process of ogenesis. And we'll discuss what these other cells are in just a moment. So we have the primary follicle that contains the diploid primary Oocide. And the primary follicle during the process, during the menstrual cycle will eventually develop into the secondary follicle.