in contrast , the magnitude of decline in the levels of 3 progestagens , i.e . pregnenolone , progesterone and 17 alpha-hydroxyprogesterone , was much less than that for androgens and oestrogens , while the concentration of 20 alpha-dihydroprogesterone was actually elevated in the ovulatory follicles .
C0033308
progesterone
C0012311
20 alpha-dihydroprogesterone