title: Effect of ovariectomy on serum prolactin concentrations in old and young rats.
abstract: Changes in endogenous prolactin levels in rats with age and after ovariectomy varied according to the reproductive state, emphasizing the different mechanisms underlying infertility in rats in constant oestrus and prolonged dioestrus.
mesh_terms: D000375:Aging; D000818:Animals; D002369:Castration; D004971:Estrus; D005260:Female; D010053:Ovary / Q000502:physiology; D011247:Pregnancy; D011388:Prolactin / Q000097:blood*; D051381:Rats
chemical_list: D011388:Prolactin