title: Studies on the cyclic changes in plasma progesterone level and pregnandiol elimination in cattle.
mesh_terms: D000818:Animals; D002417:Cattle / Q000378:metabolism*; D005260:Female; D011276:Pregnanediol / Q000652:urine*; D011374:Progesterone / Q000097:blood*
chemical_list: D011374:Progesterone; D011276:Pregnanediol