Files in this Data Supplement:

• Supplemental file 1 - Detailed description of the methods employed in this study; HPLC chromatograms and normalized SIM chromatograms (Fig. S1); Lactobacillus helvethicus LH5 as observed under a bright-field microscope and under a fluorescence microscope after being stained with propidium iodide (Fig. S2); tolerance of Lactobacillus helveticus MIMLh5 and Lactobacillus rhamnosus GG to simulated gastric juices at pH 3 and 2 and to bile (Fig. S3); adhesion of Lactobacillus helveticus MIMLh5 to the human intestinal Caco-2 cell line (Fig. S4).
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