Fig. 1

Characteristics of MSC-EVs. (A) The morphology of MSC-EVs was analyzed via transmission electron microscopy (TEM). Scale bar, 100 μm. (B) The size distribution of MSC-EVs was measured via dynamic light scattering (DLS). (C) Western blot analysis was performed to detect the expression of the EV-associated markers Alix, TSG101, and CD9 and the EV-negative marker calnexin in MSC-EVs. The full-length blots are presented in Supplementary Fig. 5