Fig. 8
a Representative fluorescence images of tumor-bearing mice after tail vein injection with free ICG, IHA NPs, and FA-RIPNPs. The black dashed circles indicate the tumor region. b Quantitative in vivo analysis of the fluorescence signal in the tumor regions of mice treated with free ICG, IHA NPs, and FA-IHA NPs as a function of injection time. c The fluorescence signal of major organs including heart, liver, spleen, lungs, and kidney