title: Use of magnetic circular dichroism in the diagnosis of porphyria.
mesh_terms: D002942:Circular Dichroism; D005243:Feces / Q000032:analysis; D006801:Humans; D008280:Magnetics; D008722:Methods; D011164:Porphyrias / Q000175:diagnosis*; D011166:Porphyrins / Q000652:urine; D012871:Skin Diseases / Q000175:diagnosis*
chemical_list: D011166:Porphyrins