title: Gas chromatographic and mass spectrometric studies on oestrogens in bile. I. Pregnant women.
mesh_terms: D015068:17-Ketosteroids / Q000032:analysis; D000328:Adult; D001646:Bile / Q000032:analysis*; D001652:Bile Ducts; D002849:Chromatography, Gas; D004386:Duodenum; D004958:Estradiol / Q000032:analysis; D004962:Estranes / Q000032:analysis; D004964:Estriol / Q000032:analysis; D004967:Estrogens / Q000032:analysis*; D004970:Estrone / Q000032:analysis; D005260:Female; D005704:Gallbladder; D006801:Humans; D007441:Intubation, Gastrointestinal; D013058:Mass Spectrometry; D008722:Methods; D011247:Pregnancy; D013261:Sterols / Q000032:analysis
chemical_list: D015068:17-Ketosteroids; D004962:Estranes; D004967:Estrogens; D013261:Sterols; D004970:Estrone; D004958:Estradiol; D004964:Estriol