title: Clinical use of porphyrin ester cromatography of urine and feces.
mesh_terms: D002855:Chromatography, Thin Layer; D005243:Feces / Q000032:analysis; D006801:Humans; D011164:Porphyrias / Q000175:diagnosis*; D011166:Porphyrins / Q000652:urine*
chemical_list: D011166:Porphyrins