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Persistence of Bacillus probiotic strains in the mouse GIT. Groups of six mice were inoculated with 109 spores, fecal pellets were collected, and spores were counted at different times. The data are arithmetic means, and the error bars indicate standard deviations. ○, B. subtilis PY79; •, BiosubtylNT; □, Subtyl; ▪, BiosubtylDL; Δ, Bactisubtil; ▴, Enterogermina.
