title: Component deficiencies. 7. The seventh component.
mesh_terms: D003184:Complement C7 / Q000172:deficiency*; D003165:Complement System Proteins / Q000172:deficiency; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000097:blood; D008585:Meningitis, Meningococcal / Q000097:blood
chemical_list: D003184:Complement C7; D003165:Complement System Proteins