title: More on identifying inherited deficiency of porphobilinogen synthase.
mesh_terms: D000622:Aminolevulinic Acid / Q000652:urine; D006801:Humans; D000623:Porphobilinogen Synthase / Q000172:deficiency*
chemical_list: D000622:Aminolevulinic Acid; D000623:Porphobilinogen Synthase