Failure of progestogens to prolong pregnancy in the guinea pig.
D000818:Animals; D004958:Estradiol; D005260:Female; D006168:Guinea Pigs; D006801:Humans; D008525:Medroxyprogesterone; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone; D011372:Progestins
D011372:Progestins; D011374:Progesterone; D004958:Estradiol; D008525:Medroxyprogesterone
ESTRADIOL; MEDROXYPROGESTERONE; PREGNANCY, ANIMAL; PROGESTERONE