So what that means is if that excel fuses with the sperm, eventually the zygote that is formed will make its way into the uterus and it will implant itself into that endometrium. And what estrogen does is it ensures that the endometrium is just the right layer, it's just the right thickness. So basically, we have this secondary follicle. And eventually what happens to our secondary follicle is it approaches this side of the membrane of the ovary and it ruptures. It essentially ruptures, releasing that secondary oicide into this area, which eventually this area is known as the peritonal canal or the peritonal cavity. And then from the peritonal cavity, that secondary oicide goes directly into that fallopium two.