title: Effects of ovariectomy and progesterone treatment on the maintenance of pregnancy in bitches.
mesh_terms: D000818:Animals; D002369:Castration; D004285:Dogs / Q000502:physiology*; D005260:Female; D011247:Pregnancy; D011255:Pregnancy Maintenance / Q000187:drug effects*; D011270:Pregnancy, Animal; D011374:Progesterone / Q000627:therapeutic use*
chemical_list: D011374:Progesterone