Fig. 6
a In vivo fluorescence images of stained AgPd PB nanozyme at different time points post IV injection. b In vivo fluorescence images of harvested major organs and tumors of mice sacrificed at 6 h post IV injection, with relative fluorescence intensity shown in c. d The fluorescence intensity of tumor at diverse time points post IV injection. e Tumor photoacoustic imaging of tumor-bearing mice after injected with AgPd PB nanozyme at different time points. f Photoacoustic imaging of tumor blood O2 with the estimated O2 content in tumor area shown in g