So notice as we have an increase in our estrogen, the increase in estrogen basically creates a positive feedback loop. It positively affects the amount of LH produced. So it causes more GnRH to release and that causes more LH to actually release and eventually causes something called the luteinizing surge or the luteinizing hormone surge or the LH surge. So as soon as we have the sharp increase in LH, as soon as he experienced the LH surge, ovulation takes place. So the mature secondary follicle ruptures, releasing this red secondary Oicide into the Peric neal cavity and then into Araphylopian two, while the remaining portion of that becomes into the corpus luteum. So the remaining portion of that secondary falcon that remains inside the Ovary develops into the corpus luteum, also as a result of the increase in LH during our LH surge.