FIG 3 .

Mixed-inoculum competitive infection of C57BL/6 mice to compare virulence of S. Typhimurium RAK113 and SL1344 containing deletion of pseudogenes in 94-213. An equal mixture (log₁₀ ratio = 0) containing approximately 1 × 10⁷ CFU of RAK113 and test strain was inoculated orally. Filled bars indicate the log₁₀ ratio ± standard errors (SE) of CFU (RAK113/test strain) on day five postinoculation in organ homogenates: mesenteric lymph nodes (MLN), cecum (Cec), ileum (Ile), spleen (Spl), and liver (Liv). *, Student’s t test was used to determine if the output log₁₀ ratio was significantly different from the input one.