title: Dissimilar isotopic ratios in urinary estrogens following simultaneous injection of delta-4-androstenedione-14C and estrone-6,7-3H.
mesh_terms: D015068:17-Ketosteroids / Q000378:metabolism; D000368:Aged; D000731:Androstanes / Q000378:metabolism; D002247:Carbon Isotopes; D002277:Carcinoma / Q000378:metabolism; D002822:Choriocarcinoma / Q000378:metabolism; D004717:Endometrium; D004958:Estradiol / Q000652:urine*; D004964:Estriol / Q000652:urine*; D004970:Estrone / Q000378:metabolism / Q000652:urine*; D005260:Female; D006801:Humans; D008875:Middle Aged; D011247:Pregnancy; D014316:Tritium; D014594:Uterine Neoplasms / Q000378:metabolism
chemical_list: D015068:17-Ketosteroids; D000731:Androstanes; D002247:Carbon Isotopes; D014316:Tritium; D004970:Estrone; D004958:Estradiol; D004964:Estriol