title: Origin of plasma protoporphyrin in patients with erythropoietic protoporphyria.
mesh_terms: D004912:Erythrocytes / Q000032:analysis*; D006801:Humans; D011164:Porphyrias / Q000097:blood*; D011166:Porphyrins / Q000097:blood*; D011524:Protoporphyrins / Q000097:blood*
chemical_list: D011166:Porphyrins; D011524:Protoporphyrins