title: Progestagen therapy of ovariectomized pregnant mares.
mesh_terms: D000022:Abortion, Spontaneous; D000818:Animals; D002369:Castration; D003692:Delayed-Action Preparations; D005260:Female; D006736:Horses / Q000502:physiology*; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000187:drug effects*; D011374:Progesterone / Q000097:blood / Q000627:therapeutic use*
chemical_list: D003692:Delayed-Action Preparations; D011374:Progesterone