title: Complement and properdin: biologic and clinical importance.
mesh_terms: D000818:Animals; D001172:Arthritis, Rheumatoid / Q000175:diagnosis / Q000276:immunology; D055598:Chemical Phenomena; D002621:Chemistry; D003165:Complement System Proteins / Q000378:metabolism*; D006461:Hemolysis; D006801:Humans; D006868:Hydrolysis; D008180:Lupus Erythematosus, Systemic / Q000175:diagnosis / Q000276:immunology; D011414:Properdin / Q000378:metabolism*; D011506:Proteins
chemical_list: D011506:Proteins; D011414:Properdin; D003165:Complement System Proteins