Fig. 5From: Triphenyl Phosphine-Functionalized Chitosan Nanoparticles Enhanced Antitumor Efficiency Through Targeted Delivery of Doxorubicin to MitochondriaImaging change of mitochondrial membrane potential after incubating free Dox and Dox-loaded TPP-NPs with A549 cells and Hela cells, the scale bar is 50 μm and applies to all partsBack to article page