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Representative immunoblotting of recombinant CD22 with sera from patients with SSc positive for anti-CD22 autoantibody by Western blotting. Lanes 1 and 2, serum samples from patients with systemic sclerosis (SSc) positive for anti-CD22 antibodies by enzyme-linked immunosorbent assay; lane 3, a serum sample from a normal human subject (NHS).
