Effects of estrogen and progesterone on progesterone levels of corpora lutea and on pregnancy in heifers.
D000818:Animals; D002417:Cattle / Q000502:physiology*; D006063:Chorionic Gonadotropin; D003338:Corpus Luteum / Q000032:analysis / Q000187:drug effects*; D004958:Estradiol / Q000494:pharmacology*; D004967:Estrogens / Q000494:pharmacology*; D005260:Female; D011247:Pregnancy; D011374:Progesterone / Q000032:analysis / Q000494:pharmacology*
D006063:Chorionic Gonadotropin; D004967:Estrogens; D011374:Progesterone; D004958:Estradiol