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. 2021 Jun 13;19:181. doi: 10.1186/s12951-021-00932-2

Fig. 3.

Fig. 3

In vivo biodistribution of BBPQDs. a In vivo fluorescence images of representative 4T1 tumor-bearing mice after the injection of Cy5.5-labeled BPQDs and BBPQDs for different time intervals. b Quantitative fluorescence intensity statistics of tumor sites at different times. c Ex vivo imaging showing the distribution of Cy5.5-labeled BPQDs and BBPQDs in the tumor tissues and major organs at 48 h post injection. d Quantitative analysis of the Cy5.5 fluorescence intensity in the tumors and major organs