Fig. 5
A The UV–vis spectra of ICG/gADNVs, ICG/Lips and ICG after 12 h incubation in 55 ℃ compared with untreated ICG. B The thermal stability of ICG after loading in gADNVs and Lips. A/A0 was the ratio of ICG absorbance before and after heating. C The stability of ICG/gADNVs, ICG/Lips and ICG in serum. D The retention rate of ICG in gADNVs and Lips after storage for different time. Data in B–D represent mean values ± SD, n = 3. Statistical differences were analyzed by two-tailed Student’s t-test. **p < 0.01, ****p < 0.0001