Our data demonstrate that cytotoxic CD8+ T cells exhibit a much broader activation than CD4+ T cells, indicating a potentially crucial role of CD8+ T cells in the immunopathogenesis of CIDP. The profound oligoclonal response in T-cell activation suggests that multiple peptides may induce and propagate this autoimmune-driven disease. The observed reduction of highly activated T cells may contribute to the therapeutic effects of IVIg.
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