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Confocal laser scanning microscopy (CLSM) images of MCF7 cells treated with PMA–RITC–PTX–CDDP-NPs (red) in a time-dependent manner (0, 3, and 6 h). Nucleus and lysosomes were stained with Hoechst 33342 (blue) and LysoTracker DND-26 (green), respectively. Scale bar = 20 μm.
