title: Orphan biologic licensed.
mesh_terms: D006418:Heme / Q000031:analogs & derivatives*; D006427:Hemin / Q000627:therapeutic use*; D006801:Humans; D008004:Licensure; D011164:Porphyrias / Q000188:drug therapy; D014481:United States
chemical_list: D006418:Heme; D006427:Hemin