Fig. 6: In vivo imaging and biodistribution study.

a, b FCL-PEG NSs-mediated fluorescence images of tumor-bearing mice. c Semi-quantitative biodistribution of FCL-PEG-Cy7 NSs. The data show mean ± s.d., n = 3 biologically independent mice. d, e PA images and values of FCL-PEG NSs at different concentrations. f, g PA images and semi-quantitative analysis of PA values of the tumor site. The color gradient is arbitrary and does not have units in these figures.