title: Synchronisation of oestrus in heifers by intravaginal application of progesterone.
mesh_terms: D000818:Animals; D002417:Cattle; D004971:Estrus / Q000187:drug effects*; D005260:Female; D010570:Pessaries; D011247:Pregnancy; D011374:Progesterone / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D011374:Progesterone