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FimA-specific salivary IgA antibody levels following coimmunization with SgFimN and SgFimC2. The amount of FimA-specific IgA was normalized to the concentration of total IgA and expressed in micrograms of specific IgA per milligram of total IgA. Bars indicate antibody levels (mean ± standard error, n = 6). Significant anti-FimA IgA levels were elicited in animals immunized with vaccine (SgFimN plus SgFimC2) at week 6 and remained elevated at week 9 (*, P < 0.05 versus control).
