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Abstract
The ability of SCID mice to accept xenografts has been exploited to study the survival, function and potential of peripheral blood mononuclear cells (PBMC) from patients with autoimmune disorders to produce tissue injury in the mouse. Studies performed with PBMC obtained from patients with organ specific and multisystem autoimmune diseases indicate that human PBMC survive in SCID mice for several months, produce IgG and autoantibodies with the same specificities as are found in the donor. Tissue injury is not generally observed in the SCID mouse recipient. SCID mice have also been partially reconstituted with bone marrow from BB (diabetic) and MRL (lupus) mice. SCID mice injected with both spleen cells from mice with collagen induced arthritis together with native bovine collagen developed more severe arthritis than the donors. SCID mice have therefore proven to be a useful resource to study autoimmunity. In both xeno- and allografts of mature lymphocytes, graft versus host reactions occur. Further studies will be necessary to improve donor cell survival without aggravating graft versus host disease.