FIG 2.

Cloacal colonization of the C. jejuni strains M1 and 13126 between 2 dpi and 15 dpi and gastrointestinal colonization at the 18-dpi postmortem examination. Colonization of each strain was examined in the crop, gizzard, duodenum, jejunum, proximal ileum, distal ileum, ceca, and colon and is presented as C. jejuni strain per gram of gastrointestinal content. Birds 1 and 2 were the seeder birds for C. jejuni M1, while birds 10 and 11 were the seeder birds for C. jejuni 13126. Gray circles represent sites where only C. jejuni M1 was found, black circles represent sites were only C. jejuni 13126 was found, circles which are half gray and half black represent sites where both C. jejuni M1 and C. jejuni 13126 were found, white circles represent Campylobacter-negative sites, and white crosses are sites that were not sampled at that time point.