Levels of progesterone in peripheral blood plasma during the estrous cycle of the ewe.
D000818:Animals; D002247:Carbon Isotopes; D002417:Cattle; D004971:Estrus; D005260:Female; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*; D012756:Sheep
D002247:Carbon Isotopes; D011374:Progesterone