Figure 4.
Systemic anti-OprF humoral response following mucosal immunization. C57BL/6 mice were immunized with AdC7OprF, AdOprF, Ad5Null or AdC7Null at a dose of 1010 pu/mouse. A. Serum anti-OprF IgG antibodies 0, 4, 8 and 12 wk after administration analyzed by ELISA using recombinant OprF as antigen. B. Serum anti-OprF IgG1, IgG2a, IgG2b and IgG3 antibodies 8 wk following administration. Data are shown as mean ± SEM, n=4/group, of one of three representative experiments. The dashed line represents the limit of detection. *, ** and *** denote significance of p<0.05, p<0.01 and p<0.001, respectively, between AdC7OprF and Ad5OprF.