title: A new approach to the use of progesterone levels for pregnancy determination.
mesh_terms: D000818:Animals; D002417:Cattle / Q000502:physiology*; D005260:Female; D008525:Medroxyprogesterone; D008892:Milk / Q000032:analysis*; D011247:Pregnancy; D011258:Pregnancy Tests / Q000379:methods / Q000662:veterinary*; D011374:Progesterone / Q000032:analysis* / Q000097:blood
chemical_list: D011374:Progesterone; D008525:Medroxyprogesterone