title: Family studies in systemic lupus erythematosus. Introduction.
mesh_terms: D000974:Antibodies, Antinuclear; D001327:Autoimmune Diseases; D005260:Female; D006801:Humans; D006942:Hypergammaglobulinemia / Q000150:complications / Q000235:genetics; D008179:Lupus Erythematosus, Discoid / Q000235:genetics; D008180:Lupus Erythematosus, Systemic / Q000150:complications / Q000235:genetics*; D008297:Male; D009504:Neutrophils; D010375:Pedigree; D012216:Rheumatic Diseases / Q000150:complications; D012217:Rheumatoid Factor
chemical_list: D000974:Antibodies, Antinuclear; D012217:Rheumatoid Factor