Fig. 6.

Tissue distributions and tumor accumulations in MCF-7/ADR tumor-bearing mice after intravenous injection. a In vivo fluorescence images of the mice at 2, 6 and 24 h after administration. b Fluorescence images of the major organs, including heart-H, liver-Li, spleen-S, lung-Lu, and kidney-K, and the tumors-T excised from the mice at 24 h after administration