Fig. 2

The MW heating properties, the release behavior of DOX at different pH conditions and the toxicity evaluation of the NaCl–DOX@PLGA nanoparticles. a The temperature changes of different groups. The right above FLIR image showed the temperature at the end of MW ablation in high group and the below image in the deionized group. b DOX release behavior of the NaCl–DOX@PLGA nanoparticles; c The viability of HepG-2 cells after being incubated with NaCl–DOX@PLGA nanoparticles (25,50,75,150,300,400 and 600 μg/mL, PBS as control). d Hemolysis ratio of NaCl–DOX@PLGA nanoparticles with different concentrations of 25,50,75,150,300,400 and 600 μg/mL, the inset represents the hemolysis conditions in tubes with different concentrations of NaCl–DOX@PLGA nanoparticles. Pos the positive control group, Neg the negative control group