Fig. 7. Analysis of F-actin level in enterocytes using laser-scanning cytometry. Representative experiment of the effect of (A) 250 nmol l^–1 Pbtx-3 or (B) 20 nmol l^–1 Pbtx-9 incubated for 4 h with intestinal cells. There is almost no change in distribution of fluorescence between cells incubated with the Pbtx-3 (A) and Pbtx-9 (B) and the controls.