title: Disorders of amino acid metabolism--1971.
mesh_terms: D000592:Amino Acid Metabolism, Inborn Errors / Q000652:urine; D006639:Histidine / Q000378:metabolism; D006712:Homocystinuria; D006801:Humans; D008375:Maple Syrup Urine Disease; D010661:Phenylketonurias; D014508:Urea / Q000378:metabolism
chemical_list: D006639:Histidine; D014508:Urea