Fig. 7
Cellular uptake confocal images of the distribution of PAMAM dendrimers in MCF-7/ADR cells (a). The ratios of PAMAM dendrimers in the mitochondria and nuclei of MCF-7/ADR cells (b). PAMAM dendrimers are green, the nuclei are stained blue using Hoechst 33258, and the mitochondria are stained red with MitoTracker Red. The scale bar is 20 μm. * indicates P < 0.05 vs. the PAMAM-NH2 group, ** indicates P < 0.01 vs. the PAMAM-NH2 group; mean ± SD, n = 3