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Microscopic images of MCF-7, HCT-116, and NHDF-Neo cells after 24 h of incubation with DOX and DOX-loaded mPEG-hyd-aPHB micelles (DOX dose: 1 μM). Images from left to right show cell nuclei stained by Hoechst 33342 (blue), DOX fluorescence in cells (red), and overlays of blue and red images. Scale bar: 50 μm.
