title: Relationship between milk progesterone concentration and milk yield, fat and total nitrogen content.
mesh_terms: D000818:Animals; D002417:Cattle / Q000378:metabolism* / Q000502:physiology; D005223:Fats / Q000032:analysis*; D005260:Female; D008892:Milk / Q000032:analysis*; D009584:Nitrogen / Q000032:analysis*; D011247:Pregnancy; D011374:Progesterone / Q000032:analysis*
chemical_list: D005223:Fats; D011374:Progesterone; D009584:Nitrogen