ArthritisArthritis, RheumatoidRheumatoid FactorEarly DiagnosisJointsArthritis, ExperimentalPeptides, CyclicAntirheumatic AgentsArthritis, InfectiousSynovitisCitrullineRheumatologyTenosynovitisFinger JointAutoantibodiesSynovial MembraneArthritis, JuvenileSynovial FluidSeverity of Illness IndexArthritis, PsoriaticArthritis, ReactiveHLA-DRB1 ChainsDisease ProgressionCohort StudiesBiological MarkersPredictive Value of TestsProspective StudiesArthritis, GoutyPrognosisTime FactorsMice, Inbred DBAOsteoarthritisCollagen Type IIMethotrexateRats, Inbred LewBlood SedimentationInjections, Intra-ArticularTumor Necrosis Factor-alphaRheumatic DiseasesImmunoglobulin GArthrographyKnee JointMetacarpophalangeal JointSpondylitis, AnkylosingSulfasalazineAutoimmune DiseasesAntibodies, MonoclonalGold Sodium ThiomalateWrist JointRheumatoid NoduleCollagenDisease Models, AnimalTreatment OutcomeTarsal JointsLyme DiseaseReceptors, Tumor Necrosis FactorHLA-DR4 AntigenAnti-Inflammatory AgentsJoint DiseasesHLA-DR AntigensCytokinesSpondylarthropathiesFoot JointsPsoriasisCartilage, ArticularAnkle JointInflammationT-LymphocytesInterleukin-17EdemaFreund's AdjuvantTarsus, AnimalEnzyme-Linked Immunosorbent AssayHLA-B27 AntigenOrganogold CompoundsDrug Therapy, CombinationHand JointsGlucose-6-Phosphate IsomeraseDisability EvaluationPainLupus Erythematosus, SystemicCells, CulturedInterleukin-6Chronic DiseaseInterleukin-1Genetic Predisposition to DiseaseInterleukin 1 Receptor Antagonist ProteinCartilageNational Institute of Arthritis and Musculoskeletal and Skin Diseases (U.S.)Mice, Inbred C57BLCase-Control StudiesIsoxazolesAutoantigensPrednisolonePenicillamineBorrelia burgdorferiImmunoglobulin MHindlimbYersinia InfectionsArthralgia