title: A study of the chromatographic behaviour of tryptophan metabolites and related compounds by chromatography on thin layers of silica gel. I. Qualitative separation.
mesh_terms: D002855:Chromatography, Thin Layer; D005782:Gels; D006801:Humans; D007202:Indicators and Reagents; D008722:Methods; D010661:Phenylketonurias / Q000652:urine; D012822:Silicon Dioxide; D012997:Solvents; D014364:Tryptophan / Q000378:metabolism* / Q000652:urine
chemical_list: D005782:Gels; D007202:Indicators and Reagents; D012997:Solvents; D012822:Silicon Dioxide; D014364:Tryptophan