title: An oligomeric hydroxyphenylalanine in malignant melanoma: a new type of melanogen.
mesh_terms: D002845:Chromatography; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008545:Melanoma / Q000032:analysis*; D009842:Oligopeptides / Q000032:analysis* / Q000652:urine; D010649:Phenylalanine / Q000031:analogs & derivatives* / Q000032:analysis / Q000652:urine; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D009842:Oligopeptides; D010649:Phenylalanine