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Titers of antibodies in AS1, AS2, AS3 and AS4 by ELISA assay. A: Titers of predefined peptide-specific antibodies. B: Possible cross immune reactions (antisera were diluted to 1:400). AS1, antiserum induced by P1-BSA; AS2, antiserum induced by P2-BSA; AS3, antiserum induced by P3-BSA; AS4, antiserum induced by P4-BSA; NS, pooled pre-immune normal serum (control). Data from all four experiments are shown as mean values.
