Progesterone assay of cows' milk and pregnancy.
D000818:Animals; D002417:Cattle / Q000502:physiology*; D005260:Female; D008892:Milk / Q000032:analysis*; D011247:Pregnancy; D011258:Pregnancy Tests / Q000662:veterinary*; D011374:Progesterone / Q000032:analysis*
D011374:Progesterone