Antibodies, AntinuclearAntibodiesAntibody SpecificityAutoantibodiesLupus Erythematosus, SystemicAntibodies, ViralConnective Tissue DiseasesAntibodies, MonoclonalFluorescent Antibody TechniqueRheumatoid FactorAntibodies, BacterialFluorescent Antibody Technique, IndirectAntibody FormationAutoimmune DiseasesAntibodies, NeutralizingScleroderma, SystemicImmunoglobulin MAntibodies, Anti-IdiotypicRheumatic DiseasesImmunoglobulin GIritisSjogren's SyndromeRaynaud DiseaseArthritis, JuvenileAntibody AffinityHepatitis, AutoimmuneMixed Connective Tissue DiseaseScleroderma, LocalizedBinding Sites, AntibodyEnzyme-Linked Immunosorbent AssayLiver Cirrhosis, BiliaryAutoantigensSerositisHIV AntibodiesAntigen-Antibody ComplexEpitopesAntibodies, Antineutrophil CytoplasmicAntibodies, NeoplasmAntibodies, ProtozoanLupus Erythematosus, CutaneousAntibodies, AntiphospholipidMyositisCross ReactionsNephritissnRNP Core ProteinsCrithidiaArthritis, RheumatoidLupus VulgarisImmunoglobulin AImmunoglobulinsLupus NephritisDNAAntigens, NuclearLupus Erythematosus, DiscoidSerologic TestsComplement C4Antibodies, AnticardiolipinMice, Inbred NZBImmunoassayAntibodies, FungalImmunoenzyme TechniquesSensitivity and SpecificityAutoimmunityNeutralization TestsAntigensHLA-DR5 AntigenImmunodiffusionDermatomyositisMice, Inbred BALB CAntigen-Antibody ReactionsAntibodies, BispecificMolecular Sequence DataSingle-Chain AntibodiesAntibodies, BlockingRibonucleoproteinsProcainamideImmunoblottingAmino Acid SequenceArthritisFalse Positive ReactionsSalivary GlandsBiological MarkersImmunoglobulin Fab FragmentsAntibodies, HeterophileAntibodies, CatalyticRabbitsBlood SedimentationGlomerulonephritisVasculitisAntibodies, Monoclonal, HumanizedTime FactorsHLA AntigensHybridomasRibonucleoproteins, Small NuclearMice, Inbred StrainsImmune SeraComplement C3ToxoplasmosisEpitope MappingCell Nucleolus