Antibodies, AntinuclearAntibodies, Antineutrophil CytoplasmicAntibodiesAntibody SpecificityAutoantibodiesVasculitisAntibodies, ViralAntibodies, MonoclonalAntibodies, BacterialWegener GranulomatosisAnti-Neutrophil Cytoplasmic Antibody-Associated VasculitisLupus Erythematosus, SystemicMyeloblastinFluorescent Antibody Technique, IndirectFluorescent Antibody TechniqueAntibody FormationAntibodies, NeutralizingConnective Tissue DiseasesRheumatoid FactorAutoimmune DiseasesAntibodies, Anti-IdiotypicAntibody AffinityImmunoglobulin GImmunoglobulin MScleroderma, SystemicEnzyme-Linked Immunosorbent AssayPeroxidaseBinding Sites, AntibodyAutoantigensRheumatic DiseasesSjogren's SyndromeHIV AntibodiesGlomerulonephritisIritisEpitopesRaynaud DiseaseAntibodies, NeoplasmArthritis, JuvenileAntibodies, ProtozoanHepatitis, AutoimmuneMixed Connective Tissue DiseaseCross ReactionsAntibodies, FungalChurg-Strauss SyndromeAntigen-Antibody ComplexScleroderma, LocalizedMicroscopic PolyangiitisPropylthiouracilAntibodies, AntiphospholipidLiver Cirrhosis, BiliarySerositisImmunoglobulin ANeutrophilsVasculitis, Leukocytoclastic, CutaneousSensitivity and SpecificityNeutralization TestsBiological MarkersAntithyroid AgentsLupus Erythematosus, CutaneousAntigen-Antibody ReactionsAntibodies, BispecificMyositisMice, Inbred BALB CMolecular Sequence DataImmunoglobulinsImmunoassayNephritisSingle-Chain AntibodiesImmune SeraImmunoenzyme TechniquesSerine EndopeptidasesAntibodies, BlockingAntigensSerologic TestssnRNP Core ProteinsAmino Acid SequenceDNACrithidiaLupus VulgarisLupus NephritisArthritis, RheumatoidImmunoglobulin Fab FragmentsPolyarteritis NodosaAntibodies, HeterophileAntibodies, CatalyticAntigens, NuclearImmunodiffusionMice, Inbred NZBComplement C4RabbitsImmunosuppressive AgentsLupus Erythematosus, DiscoidImmunoblottingAntibodies, AnticardiolipinAutoimmunityAntibodies, Monoclonal, Murine-DerivedAntibodies, Monoclonal, HumanizedHybridomasTime FactorsEpitope Mapping