Synchronization of estrus in cyclic merino ewes with vaginal sponges and pregnant mare serum.
D000818:Animals; D004971:Estrus / Q000187:drug effects*; D005260:Female; D010507:Periodicity; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000494:pharmacology*; D012756:Sheep; D013997:Time Factors
D011374:Progesterone