Figure 6. Recovery of WT M. catarrhalis O35E from the nasopharynx of immunized chinchillas three days post infection.

Results are expressed as the mean (± std error) CFU/gr of nasopharyngeal tissues (note the log scale). The asterisk indicates that the reduction in the number of bacteria is statistically significant (Wilcoxon signed rank test, P value is shown in parentheses). Control and His-tagged MhaB groups were tested in parallel on three separate occasions. Each column represents 12 animals (groups of n = 4 animals/experiment).