Relationship between progesterone concentrations in milk and plasma during the bovine oestrous cycle.
D000818:Animals; D002417:Cattle / Q000502:physiology*; D004971:Estrus; D005260:Female; D008892:Milk / Q000032:analysis*; D011247:Pregnancy; D011374:Progesterone / Q000032:analysis* / Q000097:blood; D011863:Radioimmunoassay; D013997:Time Factors; D014316:Tritium
D014316:Tritium; D011374:Progesterone