Fig. 3

a CLSM images of MDA-MB-231 cells incubated with DOX·HCl, Lipo/pB-DOX, Lipo/ICG, and Lipo/pB-DOX/ICG for 2 or 12 h. The scale bar is 50 μm. b Flow cytometry analysis of MDA-MB-231 cells incubated with different treatment groups for different incubation periods. c CLSM images of MDA-MB-231 cells incubated with Lipo/pB-DOX/ICG and irradiated for different incubation periods. The scale bar is 20 μm. d Flow cytometry analysis of MDA-MB-231 cells incubated with Lipo/pB-DOX/ICG and irradiated for different incubation periods. (Ex: 735 nm/Em: 805 nm for ICG; Ex: 505 nm/Em: 550 nm for pB-DOX)