Fig. 2

Tumor-binding ability of TEx. a Flow cytometry analysis of HCT116 cells incubated with the increasing concentrations of Cy5-labeled TEx. b Fluorescence images of HCT116 cells after incubating with Cy5-labeled TEx for different time periods (200 ×). c Corresponding quantification of the fluorescent intensity. (E) Confocal microscopy images of HCT116 cells incubated with Cy5-labeled TEx (600 ×)