title: Acute dependence of ovarian progesterone output on the presence of placentas in 21-day pregnant rabbits.
mesh_terms: D000818:Animals; D005260:Female; D005333:Fetus; D009929:Organ Size; D010053:Ovary / Q000098:blood supply / Q000378:metabolism*; D010920:Placenta / Q000502:physiology*; D011247:Pregnancy; D011374:Progesterone / Q000097:blood / Q000378:metabolism*; D011555:Pseudopregnancy; D011817:Rabbits; D012039:Regional Blood Flow; D013997:Time Factors; D014316:Tritium; D014599:Uterus / Q000502:physiology
chemical_list: D014316:Tritium; D011374:Progesterone