Antibodies, AntinuclearAntibodiesAutoantibodiesLupus Erythematosus, SystemicFluorescent Antibody Technique, IndirectFluorescent Antibody TechniqueConnective Tissue DiseasesAntibody SpecificityRheumatoid FactorAutoimmune DiseasesScleroderma, SystemicAntibodies, ViralAntibodies, BacterialImmunoglobulin GRheumatic DiseasesAntibodies, MonoclonalImmunoglobulin MIritisSjogren's SyndromeRaynaud DiseaseArthritis, JuvenileHepatitis, AutoimmuneMixed Connective Tissue DiseaseEnzyme-Linked Immunosorbent AssayScleroderma, LocalizedSerologic TestsAntibody FormationSerositisLiver Cirrhosis, BiliaryAntibodies, ProtozoanSensitivity and SpecificityAutoantigensAntibodies, Anti-IdiotypicLupus Erythematosus, CutaneousAntibodies, NeutralizingMyositissnRNP Core ProteinsNephritisCrithidiaArthritis, RheumatoidFalse Positive ReactionsAntibodies, Antineutrophil CytoplasmicLupus VulgarisImmunoassayImmunoglobulin ALupus Erythematosus, DiscoidAntigens, NuclearAntibodies, AnticardiolipinLupus NephritisHIV AntibodiesComplement C4Antigen-Antibody ComplexMice, Inbred NZB