Fig. 5. Analysis of F-actin levels in enterocytes using laser-scanning cytometry. Representative experiment of the effect of (A) 75 nmol l^–1 palytoxin or (B) 75 nmol l^–1 ostreocin-D incubated for 4 h with intestinal cells. In this case, both palytoxin (A) and ostreocin-D (B) cause an important reduction in emitted fluorescence by treated cells compared to controls.