Figure 5: Normal (GSD) but not zero (Z-GSD) guarana soft drink intake increases apoptosis and compromises cell viability in blood cells. (a) Dot plots showing the apoptosis ratios from the control, GSD, and Z-GSD groups (). (b) The apoptosis and cell viability ratios were determined using propidium iodide (PI) and FITC-annexin V. The quadrants represent the cells that are in apoptosis. Note the remarkable decrease in the number of apoptotic cells () in the Z-GSD group. Values are presented as the . vs. the control group and ^{#} vs. the GSD group (one-way ANOVA).