Effects of certain 19-nor steroids on reproductive processes and fertility.
D003270:Contraceptive Agents / Q000494:pharmacology*; D005298:Fertility; D006801:Humans; D010829:Physiological Phenomena; D011374:Progesterone / Q000031:analogs & derivatives; D012106:Research; D013256:Steroids / Q000494:pharmacology*
D003270:Contraceptive Agents; D013256:Steroids; D011374:Progesterone
CONTRACEPTIVES/pharmacology; PROGESTERONE/related compounds; STEROIDS/pharmacology