Fig 6.

In vivo persistence of P. freudenreichii strains that produce or do not produce β-glucan surface polysaccharide. Mice were fed 3 days consecutively (G1, G2, and G3) either with the β-glucan-producing WT strain LSP103 (■), its non-β-glucan-producing mutant LSP103-KO (□), or LSP103-KO-C (LSP103-KO mutant reverted to WT phenotype) (▩). Viable counts of P. freudenreichii strains were measured on selective medium in feces 6 h and 24 h after the gavages and 48 and 72 h after the last gavage. ND, not detectable (<1E+02 CFU/g of stool).