Rh-Hr Blood-Group SystemArthritis, RheumatoidAntigens, CD1dArthritisIsoantibodiesH-2 AntigensHLA AntigensArthritis, ExperimentalCarbodiimidesChloroformAntigensArthritis, InfectiousSynovial MembraneAntirheumatic AgentsArthritis, JuvenileSynovial FluidRheumatoid FactorArthritis, PsoriaticJointsAntigens, BacterialArthritis, ReactiveAntigens, NeoplasmAntigens, SurfaceHLA-DR AntigensSynovitisOsteoarthritisAntigens, ViralMethotrexateAntibodies, MonoclonalImmunoglobulin GAutoantibodiesBlood SedimentationHLA-DRB1 ChainsSeverity of Illness IndexHLA-DR4 AntigenSulfasalazineRheumatoid NoduleMetacarpophalangeal JointGold Sodium ThiomalateTumor Necrosis Factor-alphaArthrographyRheumatologyPeptides, CyclicAntigens, CDMice, Inbred DBARheumatic DiseasesT-LymphocytesEnzyme-Linked Immunosorbent AssayWrist JointEpitopesAntigens, ProtozoanFinger JointAntigens, Polyomavirus TransformingAutoimmune DiseasesTreatment OutcomeSpondylitis, AnkylosingHLA-DQ AntigensCollagen Type IIHistocompatibility Antigens Class IIHLA-B AntigensCitrullineHLA-A AntigensAntigens, FungalCells, CulturedReceptors, Tumor Necrosis FactorLymphocyte ActivationAntigens, HelminthLupus Erythematosus, SystemicAutoantigensOrganogold CompoundsImmunoglobulin MArthritis, GoutyFoot JointsBiological MarkersB-LymphocytesHistocompatibility Antigens Class IReceptors, Antigen, T-CellAntigen-Antibody ComplexHistocompatibility AntigensCytokinesCase-Control StudiesAllelesDrug Therapy, CombinationGenetic Predisposition to DiseaseCarcinoembryonic AntigenHLA-D AntigensHistocompatibility TestingAntibody SpecificityIsoxazolesPenicillamineAnti-Inflammatory AgentsAntigens, Viral, TumorHydroxychloroquineKnee JointRats, Inbred LewAntibodiesMolecular Sequence DataInjections, Intra-ArticularTime FactorsHLA-A2 Antigen