Figure 1.

Bacterial counts in the small intestine, mesenteric lymph nodes, liver, spleen, lungs, and blood of the gnotobiotic piglets. Salmonella Typhimurium (WT) and its isogenic ΔrfaL, ΔrfaG, and ΔrfaC mutant colony forming units (CFU) were counted in the ileum (A), mesenteric lymph nodes (MLN) (B), the liver (C), the spleen (D), the lungs (E), and the blood (F) 24 h post infection. Individual log CFU counts are depicted by circles (n = 8 in each group) and the median by a horizontal line. The Kruskal-Wallis test with Dunn’s post-hoc multiple comparisons test was used, and statistical differences p < 0.05 are denoted with different letters above the groups. The same letter above the groups indicates no statistically significant differences.