fig2
![Towards extracellular vesicle delivery systems for tissue regeneration: material design at the molecular level](https://image.oaes.cc/c4f27606-2eae-41f8-be4d-7070392c1fc4/5235.fig.2.jpg)
Figure 2. Schematic illustration of the mode of action of bulk EV delivery systems through EV-encapsulation and release by degradation: (A) Enzymatic degradation and responsive release by hydrogels and (B) release by dissolution of inorganic bulk materials. EVs: Extracellular vesicles.