Fig. 5
From: Visualization of microRNA therapy in cancers delivered by small extracellular vesicles
In vivo fluorescent “off–on” switch effect of GQDs/Cy5-miR@sEVs. A The fluorescent images of tumor-bearing mice after i.v. injection of GQDs/Cy5-miR@sEVs at time points as indicated. B The fluorescent intensity of tumor sites in vivo at indicated time points. C Ex vivo fluorescent signals in major organs (i.e., liver, spleen, lung, heart, kidney, stomach, intestines, pancreas, and ovary) and tumors 24 h p.i. D Ex vivo fluorescent intensity of major organs and tumors 24 h p.i