the precursors of estrogen synthesis generated from cholesterol , namely , progesterone , 17 alpha-oh-progesterone , androstenedione , pregnenolone , 17 alpha-oh-pregnenolone , and dehydroepinandrosterone , however , caused a 2- to 3-fold enhancement of fetal and maternal guinea pig hepatic and uterine guaynlate cyclase activity at a concentration of 1 microm .
C0033308
progesterone
C0020387
17