fig7

Figure 7. (A) Transmission electron microscopy image of EVs (scale bar = 100 nm)^[203]. (B) Scanning electron microscope image of EVs showing the EVs’ circular shape (reproduced from^[151]). (C) Scanning electron microscope image of EVs, which shows cup-shaped EVs (reproduced from^[150]). (D) Atomic force microscope image for EVs (reproduced from^[156]). (Figure 7A is produced from He et al.’s work with permission).