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Fig. 2 | BMC Biology

Fig. 2

From: Q&A: What are exosomes, exactly?

Fig. 2

ILVs are generated by invagination of the endosomal membrane and have three possible fates. Inset: intraluminal vesicles (ILV) are formed by invagination of the endosomal membrane by either ESCRT-dependent or ESCRT-independent mechanisms. Matured endosomes accumulate ILVs within their lumen and have three distinct fates. They may deliver content that contributes to the biogenesis of specialized lysosome-related organelles (for example, melanosomes, Weibel-Palade bodies, azurophilic granules), they may fuse with lysosomes or they may fuse with the plasma membrane where released ILVs are now termed ‘exosomes’

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