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Fig. 1. Analysis of F-actin level in enterocytes by using laser-scanning cytometry. Typical experiment showing the effect on enterocytes of a 4 h incubation with (A) 1 µmol l–1 PTX-6 or (B) 1 µmol l–1 YTX. PTX-6 provokes a high loss of fluorescence intensity in cells compared to controls (A), while almost no effect is observed with YTX (B).