title: Pink napkins--presenting feature in a case of alkaptonuria.
mesh_terms: D000474:Alkaptonuria / Q000652:urine*; D001205:Ascorbic Acid / Q000494:pharmacology; D006713:Homogentisic Acid / Q000652:urine*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007223:Infant; D008297:Male; D010858:Pigmentation / Q000187:drug effects; D013053:Spectrophotometry
chemical_list: D006713:Homogentisic Acid; D001205:Ascorbic Acid