Fig. 5From: Bifidobacterium mongoliense genome seems particularly adapted to milk oligosaccharide digestion leading to production of antivirulent metabolitesEffects of tested CFSM on S. Typhimurium virulence expression. Virulence modulations observed with CFSM obtained from MRS2 (a), MRS2-G (b), MRS2-Wh (c) and MRS2–3′SL (d) media fermented by B. mongoliense after 4 h of incubation. Gene expression ratios of S. Typhimurium were normalised to the housekeeping gene gmk and compared with those of the unfermented media. Values are expressed as the average of at least 3 independent replicates, bars representing standard errors. Negative values (lower than − 2) represent down-regulation of genes and positive values (higher than 2) represent up-regulation of genes. The ratio presented in this figure were considered with a calibrator ratio resulting from a control population (without modulation of gene expression). To determine a significant modulation of the ratio before and after contact with CFSM, a Wilcoxon test for paired samples was performed where p < 0.05 was considered as significant. *P < 0.05Back to article page