title: Unconjugated C19 and C21 steroids in human faeces.
mesh_terms: D000328:Adult; D000731:Androstanes / Q000032:analysis; D000738:Androsterone / Q000032:analysis; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D005043:Etiocholanolone / Q000032:analysis; D005243:Feces / Q000032:analysis*; D005938:Glucocorticoids / Q000032:analysis*; D006801:Humans; D008297:Male; D011278:Pregnanes / Q000032:analysis; D012822:Silicon Dioxide; D013057:Spectrum Analysis
chemical_list: D000731:Androstanes; D005938:Glucocorticoids; D011278:Pregnanes; D012822:Silicon Dioxide; D005043:Etiocholanolone; D000738:Androsterone