Figure 4: The intracellular accumulation of Hoechst 33342 in H460/MX20 and xH460/MX20 cells.

The intracellular accumulation of Hoechst 33342 was measured by flow cytometry. +: the sample was treated with lapatinib (1.25 μM). Data were represented the mean ± SD of at least three independent experiments. Events represented the number of cells at different fluorescence intensities.