CellEvent Green, annexin V, and DNA-binding dye labeling. EL4 cells untreated or treated with camptothecin at 5 μM for 16 h were labeled with CellEvent Green, Pacific Blue conjugated annexin V and the DNA dye 7-AAD. Scatter dot plots and labeling for all three labels in untreated cells (i), treated cells gated for all cells (middle group), and treated cells gated for scatter viable cells only (bottom group) are shown. Stages of cell death are indicated