Breed differences in plasma progesterone concentration in the bovine during proestrus.
D000818:Animals; D001947:Breeding; D002417:Cattle / Q000378:metabolism*; D004971:Estrus; D005260:Female; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*; D013045:Species Specificity
D011374:Progesterone