Phagocytosis assay of LS30 exposed cells, stimulated by Escherichia coli. (A) Cell viability (a: CTL versus acute 10 µg/mL, 15 µg/mL, acute 20 µg/mL and repeated 5 µg/mL, p value < 0.05). (B) Escherichia coli uptake followed by rhodamine B fluorescence. (C) Proportion of phagocytic cells (b: CTL versus repeated 5 µg/mL, p-value < 0.05; c: repeated 5 µg/mL versus acute 20 µg/mL, p-value < 0.01; d: CTL versus acute 20 µg/mL, p-value < 0.01). (D) Phagocytic activity of the cells (e: CTL versus repeated 5 µg/mL, p-value < 0.05; f: repeated 5 µg/mL versus acute 20 µg/mL, p-value < 0.01; g: CTL versus acute 20 µg/mL, p-value < 0.01.