title: Hormonal induction of twinning in cattle.
mesh_terms: D000818:Animals; D002417:Cattle / Q000502:physiology*; D006063:Chorionic Gonadotropin / Q000494:pharmacology; D005260:Female; D006062:Gonadotropins / Q000494:pharmacology*; D006064:Gonadotropins, Equine / Q000494:pharmacology; D008297:Male; D010060:Ovulation / Q000187:drug effects; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000187:drug effects*; D011272:Pregnancy, Multiple; D014427:Twins
chemical_list: D006063:Chorionic Gonadotropin; D006062:Gonadotropins; D006064:Gonadotropins, Equine