title: Xanthine stone formation.
mesh_terms: D006801:Humans; D011687:Purines / Q000378:metabolism; D013053:Spectrophotometry; D014545:Urinary Calculi / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D014969:Xanthine Oxidase / Q000378:metabolism; D014970:Xanthines / Q000378:metabolism*
chemical_list: D011687:Purines; D014970:Xanthines; D014969:Xanthine Oxidase