Differential expression levels of mice cecal cytokine genes. The relative log fold changes in expression of IL-1β (a), IL-6 (b), IL-10 (c), INF-γ (d), TGF-β (e), and TNF-α (f) genes from cecum tissue cells collected from control mice, mice under ST infection, mice pretreated with wild-type LC and challenged with ST, or mice pretreated with LC+mcra and challenged with ST were examined in triplicate. Different letters (‘a’ through ‘d’) at individual time point (day 14, 21, or 28) are significantly different (p < 0.05) among groups of control, infection, and infection following probiotic pretreatments.