Correlation of a precipitin reaction to an RNAprotein antigen and a low prevalence of nephritis in patients with systemic lupus erythematosus.

Antibodies/analysis Antigen-Antibody Complex Antigens Autoantibodies/analysis Complement Fixation Tests DNA, Single-Stranded Humans Immunodiffusion Immunoelectrophoresis Lupus Erythematosus, Systemic/complications,diagnosis,immunology Nephritis/etiology Nucleoproteins Precipitin Tests Precipitins/analysis Prognosis RNA

Antibodies Antigen-Antibody Complex Antigens Autoantibodies DNA, Single-Stranded Nucleoproteins Precipitins RNA