title: Isolation of a   -diene steroid from the urine of a boy with early sexual maturation.
mesh_terms: D000293:Adolescent; D000731:Androstanes / Q000652:urine*; D002849:Chromatography, Gas; D002854:Chromatography, Paper; D002855:Chromatography, Thin Layer; D002942:Circular Dichroism; D006801:Humans; D007664:Ketosteroids / Q000652:urine; D008297:Male; D013058:Mass Spectrometry; D011629:Puberty, Precocious / Q000652:urine*; D012737:Sex Factors; D013057:Spectrum Analysis
chemical_list: D000731:Androstanes; D007664:Ketosteroids