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Specific antibody titers, measured by ELISA, in pigs vaccinated with TSOL18 (A and B) or TSOL45-1A (C and D) recombinant T. solium oncosphere antigen in separate vaccine trials 1 (A and C) and 2 (B and D). Squares, IgG1; circles, IgG2; arrows, times at which pigs received immunizations; C, day on which pigs were challenged with T. solium eggs.
