Collagen-induced arthritis in DBA/1 mice is a model of paw swelling and higher levels of anti-collagen antibody. rheumatoid arthritis with marked synovitis and erosions.By infecting arthritogenic splenocytes ex vivo with TGF 1 The disease can be adoptively transferred to SCID mice retrovirus, this exacerbation was inhibited. TGF 1 was with arthritogenic splenocytes from DBA/1 mice injected effective in lowering inflammation of joints with already with bovine collagen type II. However, infection of arthritoestablished arthritis and inhibiting the spreading of the disgenic splenocytes with a retrovirus expressing TGF 1 ease to other joints. Transient reduction in anti-collagen inhibits development of arthritis in SCID mice. When DBA/1 antibody levels could also be obtained using purified T cells mice, at onset of arthritis have additional arthritogenic infected with TGF 1 retrovirus. In addition, expression of splenocytes transferred, exacerbation occurs, reflected in TGF 1 in lymphocytes reduced the levels of gelatinase a rapid increase in the number of arthritic joints, increased (MMP2) activity in inflamed joints.