title: Mucopolysaccharoidosis--a report of three patients with unusual manifestations.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D006639:Histidine / Q000652:urine*; D006801:Humans; D008297:Male; D008944:Mitral Valve Insufficiency / Q000209:etiology*; D009085:Mucopolysaccharidosis IV / Q000150:complications* / Q000235:genetics
chemical_list: D006639:Histidine