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. 2021 Jan 1;11(5):2263–2277. doi: 10.7150/thno.51571

Figure 1.

Figure 1

Intracellular biogenesis and secretion of extracellular vesicles. A: The process of exosome formation begins with early-sorting endosomes (ESE) formed by endocytosis on the surface of plasma membranes. Subsequently, ESE matures to generate a late endosome (LSE)/multivesicular body (MVB) and exosomes are released into the extracellular space by fusion of MVBs. B: Exosomes interact with target cells via receptors, fusion with plasma membrane, endocytosis, or release of their cargo.