AutoantigensArthritis, RheumatoidLupus Erythematosus, SystemicAutoantibodiesAntirheumatic AgentsSeverity of Illness IndexBlood SedimentationSpondylitis, AnkylosingAntibodies, AntinuclearAutoimmune DiseasesAutoimmunityBiological MarkersJointsReceptor-Like Protein Tyrosine Phosphatases, Class 8Crohn DiseaseImmunoglobulin GDermatomyositisLupus NephritisRheumatologyColitis, UlcerativeMethotrexateGlutamate DecarboxylaseArthritis, JuvenileTreatment OutcomeMyositisEnzyme-Linked Immunosorbent AssayC-Reactive ProteinRNA, Small CytoplasmicSulfasalazineDisease ProgressionRheumatoid FactorAntibodies, MonoclonalDiabetes Mellitus, Type 1Antibodies, Antineutrophil CytoplasmicRheumatic DiseasesHydroxychloroquineSjogren's SyndromeWegener GranulomatosisMultiple SclerosisDisability EvaluationArthrographyCitrullineArthritis, PsoriaticT-LymphocytesPrednisolonesnRNP Core ProteinsTumor Necrosis Factor-alphaVasculitisScleroderma, SystemicProspective StudiesInflammatory Bowel DiseasesCase-Control StudiesOrchitisEpitopesB-LymphocytesSpondylarthropathiesSynovial FluidRemission InductionRibonucleoproteinsFollow-Up StudiesCapZ Actin Capping ProteinMyeloblastinLymphocyte ActivationDrug Therapy, CombinationAntibody SpecificityLiver Cirrhosis, BiliaryAnti-Inflammatory AgentsAntibodies, Monoclonal, HumanizedImmunosuppressive AgentsUveitisSynovitisAlopecia AreataLongitudinal StudiesSynovial MembraneSerologyProtein Array AnalysisReceptors, Tumor Necrosis FactorProtein Tyrosine Phosphatase, Non-Receptor Type 1Cohort StudiesMice, Inbred NODDouble-Blind MethodCross ReactionsGlucocorticoidsPolymyositisTakayasu ArteritisAnti-Inflammatory Agents, Non-SteroidalMolecular MimicryHLA-DR AntigensComplement C4Islets of LangerhansFoot JointsConnective Tissue DiseasesHealth StatusProinsulinMolecular Sequence DataAntigen-Antibody ComplexReproducibility of ResultsCD4-Positive T-LymphocytesMultiple Sclerosis, Relapsing-RemittingSpondylarthritis