Length of estrous cycle and size of corpus luteum in guinea pigs and sheep treated with progesterone at different days of the estrous cycle.
D000818:Animals; D003338:Corpus Luteum / Q000187:drug effects*; D004971:Estrus / Q000187:drug effects*; D005260:Female; D006168:Guinea Pigs / Q000502:physiology*; D011247:Pregnancy; D011374:Progesterone / Q000494:pharmacology*; D012756:Sheep / Q000502:physiology*
D011374:Progesterone