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Immunoblot analysis of the reactions of antibodies in sera from persons with systemic autoimmune disease and control sera with HIV proteins on nitrocellulose strips. The sera were from a patient infected with HIV-1 (lane a), an HIV-seronegative blood donor (lane b), or patients with SLE syndrome (lanes c, d, g, i, l, and n) or Sjögren’s syndrome (lanes e, f, h, j, k, and m).
