title: [Immunologic background of overlap syndrome--studies on humoral immunity].
mesh_terms: D000974:Antibodies, Antinuclear / Q000032:analysis; D003095:Collagen Diseases / Q000276:immunology*; D004247:DNA / Q000276:immunology; D006801:Humans; D007109:Immunity; D008180:Lupus Erythematosus, Systemic / Q000150:complications / Q000276:immunology; D012595:Scleroderma, Systemic / Q000150:complications / Q000276:immunology; D013577:Syndrome
chemical_list: D000974:Antibodies, Antinuclear; D004247:DNA