Effects of progesterone withdrawal and estrogen on maternal behavior in nulliparous rats.
D000818:Animals; D002369:Castration; D004958:Estradiol / Q000494:pharmacology; D004967:Estrogens / Q000502:physiology*; D005260:Female; D008425:Maternal Behavior; D011374:Progesterone / Q000502:physiology*; D051381:Rats
D004967:Estrogens; D011374:Progesterone; D004958:Estradiol