Total number of PMN and NK cells after infection with Vi⁺ or Vi⁻<i>S.</i> Typhimurium in TLR4^−/− and MyD88^−/− mice.

<p>Total cell number of PMN and NK cells in the spleen 24 h post (×10⁴) ± SEM.</p><p>*indicates significant values of *, p<0.01;</p><p>**, p<0.001, as determined by one-way ANOVA followed by Bonferroni's multiple comparison test when compared to naïve mice.</p>†<p>indicates significant values of †, p<0.01;</p>††<p>, p<0.001, as determined by one-way ANOVA followed by Bonferroni's multiple comparison test when WT Vi⁻ are compared to KO Vi⁻ infected mice.