Impact of cocoa extract (CE) and cocoa procyanidin fractions (monomer-, oligomer- and polymer-rich fractions: M, O, and P, respectively) (100 μg/mL) on the barrier integrity of differentiated Caco-2 cells exposed to dextran sodium sulfate (DSS), as measured by transmembrane permeability to FITC-dextran. Data represent the mean of two independent experiments (n = 3 per experiment) ± SEM. Different superscript letters indicate P < 0.05 by one way ANOVA with Tukey’s HSD post-test.