title: Placentophagia in nonpregnant rats: influence of estrous cycle stage and birthplace.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D004971:Estrus; D005247:Feeding Behavior; D005260:Female; D008425:Maternal Behavior; D010298:Parity; D010920:Placenta; D011247:Pregnancy; D011359:Proestrus; D051381:Rats