title: Diurnal variations of oestradiol-17beta in milk of cross-bred cows during oestrous cycle and early pregnancy.
mesh_terms: D000818:Animals; D002417:Cattle / Q000502:physiology*; D002940:Circadian Rhythm; D004958:Estradiol / Q000032:analysis*; D004971:Estrus; D005260:Female; D008892:Milk / Q000032:analysis*; D011247:Pregnancy; D011270:Pregnancy, Animal; D011863:Radioimmunoassay
chemical_list: D004958:Estradiol