TLR5 and infection: Seven days post infection, the mice that received continuously L. casei CRL 431 (Lc-S-Lc group) showed a significant (p < 0.01) increase of TLR2 (+) and TLR5 (+) cells (30 ± 10 cells/10 fields and 18 ± 2 cells/10 fields, for TLR2 and TLR5 respectively) compared to S group (14 ± 5 cells/10 fields and 9 ± 2 cells/10 fields, respectively) (Figure 3A and 3C).