title: Progesterone concentration in milk and blood during pregnancy in cows.
mesh_terms: D000818:Animals; D002417:Cattle; D002845:Chromatography; D005260:Female; D005865:Gestational Age; D008892:Milk / Q000032:analysis*; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000032:analysis / Q000097:blood*; D011863:Radioimmunoassay; D012756:Sheep / Q000276:immunology; D014316:Tritium
chemical_list: D014316:Tritium; D011374:Progesterone