title: Blood levels of progesterone and 15-keto-13,14-dihydro-prostaglandin F2alpha during the normal oestrous cycle and early pregnancy in heifers.
mesh_terms: D000818:Animals; D002417:Cattle / Q000097:blood*; D004971:Estrus; D005260:Female; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000097:blood*; D011460:Prostaglandins F / Q000097:blood*; D013048:Specimen Handling
chemical_list: D011460:Prostaglandins F; D011374:Progesterone