the study examined the effect of estrogen priming on progesterone ( p4 ) -induced lhrh release , the tissue site of action of p4 , and the effect of 5 alpha-dihydroxyprogesterone ( 5 alpha-dhp ) on lhrh release from hypothalamic fragments superfused in vitro .
C0033308
progesterone
C0002328
dihydroxyprogesterone