Fig. 4

Change in FluoZin-3 fluorescence intensity by ZnCl₂. a ZnCl₂-induced shift of FluoZin-3 fluorescence histogram. FluoZin-3 fluorescence was measured from cells that were not stained with propidium iodide. Each histogram was constructed with 2,500 cells. b Concentration-dependent augmentation of FluoZin-3 fluorescence by ZnCl₂. Columns and bars indicate means and standard deviations, respectively, of five experiments. ^# P < 0.05, ^## P < 0.01 significant differences compared with control