Figure 2. In vivo imaging specificity investigation of Cy5-S6.

Tumor-bearing mice were intravenously injected with different Cy5-labeled DNA probes and then imaged. (A) Time-lapse in vivo fluorescence imaging. (B) Images at 3 h postinjection with tumor tissues uncovered. (C) Images of the isolated tumor tissues. (a) A549 tumor-bearing mice injected with Cy5-S6 or (b) Cy5-Lib, (c) Tca8113 tumor-bearing mice injected with Cy5-S6. The pink circle in every image locates the tumor site.