ACE2 and viral infectious disease: successfully prepared the Bio‐MVs from ACE2‐rich cells using an extrusion method.[75] (Figure 3B) This kind of Bio‐MVs contained 265 ng mg−1 ACE2 on the surface and acted as baits to trap the viral spike (S) protein in a dose‐dependent manner, efficiently suppressed SARS‐CoV‐2 S pseudovirions entry into host cells, and blocked viral infection in vitro and in vivo.