Arthritis, RheumatoidPsoriasisAntirheumatic AgentsCyclosporinePUVA TherapyUltraviolet TherapyDermatologic AgentsAcitretinKeratolytic AgentsArthritisArthritis, PsoriaticArthritis, ExperimentalSeverity of Illness IndexArthritis, InfectiousSynovial MembraneImmunosuppressive AgentsArthritis, JuvenileSynovial FluidRheumatoid FactorAntibodies, Monoclonal, HumanizedAntibodies, MonoclonalJointsTreatment OutcomeArthritis, ReactiveMethotrexateCohort StudiesSynovitisOsteoarthritisBlood SedimentationRisk FactorsTacrolimusTumor Necrosis Factor-alphaCardiovascular DiseasesGreat BritainAutoantibodiesSulfasalazineRheumatoid NoduleMetacarpophalangeal JointImmunoglobulin GArthrographyGold Sodium ThiomalateRheumatologyDrug Therapy, CombinationRheumatic DiseasesPeptides, CyclicHLA-DRB1 ChainsAnti-Inflammatory AgentsMice, Inbred DBAWrist JointReceptors, Tumor Necrosis FactorKidney TransplantationAutoimmune DiseasesHLA-DR AntigensSpondylitis, AnkylosingFinger JointHLA-DR4 AntigenPrednisoloneCollagen Type IICase-Control StudiesSkinCitrullineGraft RejectionGenetic Predisposition to DiseaseRats, Inbred LewBiological Markers