Fig 6. Cecal colonization of C. jejuni and sIgA responses in vaccinated and control chickens.
(A) Chickens were challenged with C. jejuni at 18 day of age. One week post-inoculation (25 days of age) the number C. jejuni in the ceca was determined by plate counting (CFU/ g). Each symbol represents one chicken of the indicated groups, bars represent the mean number of log10 CFU/ g per group. (B) Antigen-specific sIgA in 20-times diluted cecal content from 25 day-old chickens (one week after C. jejuni challenge) as determined by ELISA. Graphs represent the analysis of individual animals of each of the indicated groups, displayed as a box-and-whisker plot.