title: The activities of the enzymes of haem biosynthesis in the porphyrias and during treatment of acute intermittent porphyrias.
mesh_terms: D000624:5-Aminolevulinate Synthetase / Q000097:blood*; D000208:Acute Disease; D000642:Ammonia-Lyases / Q000097:blood*; D004912:Erythrocytes / Q000201:enzymology; D006418:Heme / Q000096:biosynthesis* / Q000627:therapeutic use*; D006801:Humans; D011163:Hydroxymethylbilane Synthase / Q000097:blood*; D007962:Leukocytes / Q000201:enzymology; D011164:Porphyrias / Q000188:drug therapy / Q000201:enzymology*; D011166:Porphyrins / Q000378:metabolism; D012871:Skin Diseases / Q000188:drug therapy / Q000201:enzymology
chemical_list: D011166:Porphyrins; D006418:Heme; D000624:5-Aminolevulinate Synthetase; D011163:Hydroxymethylbilane Synthase; D000642:Ammonia-Lyases