Regulation of nocturnal prolactin surges during pregnancy in the rat.
D000818:Animals; D002369:Castration; D002940:Circadian Rhythm / Q000187:drug effects; D004343:Drug Implants; D005260:Female; D007044:Hysterectomy; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000494:pharmacology; D011388:Prolactin / Q000097:blood*; D051381:Rats
D004343:Drug Implants; D011374:Progesterone; D011388:Prolactin