Plasma estrogen and progesterone levels in cows prior to and during estrus.
D000818:Animals; D002417:Cattle / Q000502:physiology*; D004958:Estradiol / Q000097:blood; D004967:Estrogens / Q000097:blood*; D004971:Estrus; D005260:Female; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*; D011485:Protein Binding; D011863:Radioimmunoassay; D014316:Tritium
D004967:Estrogens; D014316:Tritium; D011374:Progesterone; D004958:Estradiol