Figure 6: Effect of increasing concentrations of diamide (13.25-63.2 μmol/L) on the SW voltammograms (δ current) of reduced glutathione (120 μmol/L) dissolved in 0.1 mol/L phosphate buffer (pH 7.5). Voltammograms that decreases as a function of the concentration of diamide are described with solid line and those that increase in dashed line. Each voltammogram represents the mean of five independent experiments. Other experimental conditions were the same as those described in figure 1.