title: Pregnancy initiation in postpartum estrus in three species of muroid rodents.
mesh_terms: D000818:Animals; D003411:Arvicolinae; D003307:Copulation; D004542:Ejaculation; D004971:Estrus; D005260:Female; D008297:Male; D051379:Mice; D011247:Pregnancy; D011270:Pregnancy, Animal