title: Gas chromatographic determination and mass spectrometric identification of oestrogens in normal human placental tissue at term.
mesh_terms: D000535:Aluminum; D002845:Chromatography; D002849:Chromatography, Gas; D002854:Chromatography, Paper; D004958:Estradiol / Q000032:analysis; D004962:Estranes / Q000032:analysis; D004964:Estriol / Q000032:analysis; D004967:Estrogens / Q000032:analysis*; D004966:Estrogens, Conjugated (USP) / Q000032:analysis; D004970:Estrone / Q000032:analysis; D005260:Female; D006801:Humans; D006914:Hydroxysteroids / Q000032:analysis; D007664:Ketosteroids / Q000032:analysis; D013058:Mass Spectrometry; D008722:Methods; D010920:Placenta / Q000032:analysis*; D011247:Pregnancy; D013997:Time Factors
chemical_list: D004962:Estranes; D004967:Estrogens; D004966:Estrogens, Conjugated (USP); D006914:Hydroxysteroids; D007664:Ketosteroids; D004970:Estrone; D004958:Estradiol; D000535:Aluminum; D004964:Estriol