And inside that secondary follicle we have that secondary oicide. So to see what we mean, let's take a look at the following diagram so initially the GnRH causes, let's say, the follicle stimulating hormone to increase in concentration as shown in the following diagram. And as FSH increases, that stimulates the primary follicle to become the secondary follicle. 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.