Fig. 6

Biodistribution kinetic analysis of NVs in mice with near-infrared imaging. a The mice were injected by intraperitoneal injection of Cy7-labeled NVs (2 × 109) or PBS. At each time point, the fluorescence of the whole body was obtained by IVIS spectrum. b Various tissues were obtained at 6 and 24 h following injection of Cy7-labeled NVs. n = 3/group