title: Third component of complement (C3) and fourth component of complement (C4) in discoid and systemic lupus erythematosus.
mesh_terms: D000328:Adult; D000368:Aged; D000936:Antigen-Antibody Complex; D003165:Complement System Proteins; D003298:Coombs Test; D003450:Cryoglobulins; D004590:Electrophoresis, Paper; D005260:Female; D006801:Humans; D007104:Immune Adherence Reaction; D007122:Immunoelectrophoresis; D007074:Immunoglobulin G / Q000032:analysis; D008179:Lupus Erythematosus, Discoid / Q000276:immunology*; D008180:Lupus Erythematosus, Systemic / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D010587:Phagocytosis; D011485:Protein Binding; D005719:gamma-Globulins / Q000032:analysis
chemical_list: D000936:Antigen-Antibody Complex; D003450:Cryoglobulins; D007074:Immunoglobulin G; D005719:gamma-Globulins; D003165:Complement System Proteins