Current Perspectives on In Vivo Noninvasive Tracking of Extracellular Vesicles with Molecular Imaging

Figure 1

Release of exosomes and microvesicles. (a) Exosomes are represented by small vesicles of different size released from multivesicular body and microvesicles bud directly from the plasma membrane. (b) Typical structure of EV by TEM images and the size of EVs is around 40–500 nm. EV; extracellular vesicle, TEM; transmission electron microscopy.