Now inside the secondary follicle. So this is the mature secondary follicle. We have this fluid shown in green and we have the actual x cell, the secondary oocyte shown in red. And all these cells around the follicle are the FECA cells and the granulosa cells. And we'll discuss their function in just a moment. So as our LH de luthanizing hormone and FSH, follicle stimulating hormone, increases in concentration, they affect the, theca cells and the granulosa cells found in the follicle.