title: The isolation and identification of progesterone obtained from cows' milk during pregnancy.
mesh_terms: D000818:Animals; D002417:Cattle; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D005260:Female; D006801:Humans; D013058:Mass Spectrometry; D008722:Methods; D008892:Milk / Q000032:analysis*; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000302:isolation & purification*
chemical_list: D011374:Progesterone