Figure 2.

Effect of Lactobacillus reuteri strains on FITC‐dextran permeability enhanced by ETEC. Monolayers were pretreated with four strains of L. reuteri at MOB 100 and 1000 for 6 h, half of them were challenged with ETEC for 6 h, and finally 1 mg/mL of FITC‐dextran (4 kDa) was added to the apical side of the inserts. The samples were taken from the basolateral pole 6 h post‐treatment and analysed for fluorescence intensity (excitation, 492 nm; emission, 520 nm). Data given are means (±SEM) of three independent seedings. Values with different letters are significantly different at P ≤ 0.05.