FIG. 1.
S. boulardii prevents EPEC-induced decrease of transepithelial resistance in T84 monolayers. Bacteria (100 bacteria/cell) and yeast (10 yeasts/cell) were added to the apical surface of T84 cells. Resistance decreased in cells infected with EPEC alone (▴) but remained comparable to control monolayers (●) in cells infected in the presence of S. boulardii (■). S. boulardii alone did not affect the transepithelial resistance of T84 monolayers during the time of these experiments (⧫). Each point represents the mean value obtained from at least six individual T84 monolayers. Error bars show the standard deviation. The asterisk denotes a significant difference versus the control monolayers (P < 0.02) when compared by the Bonferroni-Dunn tests.