Colonization of <i>C. jejuni</i> strain NCTC 11168 and its mutants in chickens.

<p>Approximately 10⁷ CFU of each of NCTC 11168 (solid squares), Cj89⁻(open circles), Cj91⁻ (solid triangles), Comp91 (solid diamonds) were inoculated into 3-day-old chickens. Cecal contents were collected on 3, 6, and 10 days post inoculation (DPI) and enumerated by plate counts. Each symbol represents the colonization level in a single bird. The mean for each group is depicted by a horizontal bar. The detection limit of the plating method is about 100 CFU/g of feces. An asterisk indicates significant differences in colonization levels at P<0.05 as determined by Student's t-test.