Fig. 2From: Triphenyl Phosphine-Functionalized Chitosan Nanoparticles Enhanced Antitumor Efficiency Through Targeted Delivery of Doxorubicin to MitochondriaViability of A549 cells (a) and Hela cells (b) after incubation with different amounts of naked NPs for 24 h (n = 3). Data are presented as means ± SD (n = 3). c A549 cells viability cultured with Dox-loaded TPP-NPs and free Dox at different concentrations of Dox after 24 h. Data are presented as means ± SD (n = 3). #P < 0.05 vs the corresponding free Dox. d Hela cells viability cultured with Dox-loaded TPP-NPs and free Dox at different concentrations of Dox after 24 h. Data are presented as means ± SD (n = 3). *P < 0.05 vs the corresponding free DoxBack to article page