Fig. 2

Fluorescence properties of cRGD-Gd-Cy5.5 nanoprobe. a The liposome labeled with fluorescence Cy5.5 was detected by multifunctional enzyme analyzer, and there was a visible emission peak at 670 nm at 600-nm excitation light. b Under 600-nm excitation light, the liposome-coupled fluorescent Cy5.5 (left) has an obvious luminescence, while the blank liposome (right) does not have fluorescence imaging