title: Generation of chemotactic activity in serum from patients with erythropoietic protoporphyria and porphyria cutanea tarda.
mesh_terms: D002634:Chemotaxis, Leukocyte / Q000528:radiation effects; D003167:Complement Activation; D003165:Complement System Proteins / Q000032:analysis / Q000528:radiation effects; D006801:Humans; D008027:Light; D011164:Porphyrias / Q000276:immunology*; D011524:Protoporphyrins / Q000097:blood; D012871:Skin Diseases / Q000276:immunology*
chemical_list: D011524:Protoporphyrins; D003165:Complement System Proteins