Arthritis, RheumatoidArthritisArthritis, ExperimentalArthritis, InfectiousArthritis, JuvenileArthritis, PsoriaticArthritis, ReactiveSynovial MembraneJointsSynovial FluidArthritis, GoutyRheumatoid FactorMice, Inbred DBASynovitisOsteoarthritisCollagen Type IIMethotrexateSeverity of Illness IndexRats, Inbred LewAutoantibodiesBlood SedimentationInjections, Intra-ArticularTumor Necrosis Factor-alphaRheumatic DiseasesImmunoglobulin GArthrographyRheumatologyKnee JointMetacarpophalangeal JointSpondylitis, AnkylosingSulfasalazinePeptides, CyclicAutoimmune DiseasesAntibodies, MonoclonalGold Sodium ThiomalateWrist JointRheumatoid NoduleCollagenHLA-DRB1 ChainsFinger JointDisease Models, AnimalTreatment OutcomeTarsal JointsLyme DiseaseReceptors, Tumor Necrosis FactorHLA-DR4 AntigenAnti-Inflammatory AgentsJoint DiseasesHLA-DR AntigensCitrullineCytokinesSpondylarthropathiesFoot JointsPsoriasisCartilage, ArticularAnkle JointInflammationT-LymphocytesInterleukin-17EdemaFreund's AdjuvantTarsus, AnimalEnzyme-Linked Immunosorbent AssayTenosynovitisHLA-B27 AntigenBiological MarkersOrganogold 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.)Time FactorsMice, Inbred C57BLCase-Control StudiesIsoxazolesAutoantigensPrednisolonePenicillamineBorrelia burgdorferiImmunoglobulin MHindlimbYersinia InfectionsArthralgiaSpondylarthritisAutoimmunityPain MeasurementToe JointFollow-Up StudiesFibroblastsOsteoclasts