Menu Home Our Society Membership Publications Contact ASRM Member Login Members Only What are Exosomes? Exosomes are membrane-bound extracellular vesicles (EVs) that are produced in the ENDOSOMAL system of cells of most eukaryotic cells. Exosomes are formed through the inward invagination ((turns inwards) of a late endosome, also known as a multivesicular body (MVB) that encloses extracellular material. MVBs contain intraluminal vesicles… Continue reading What are Exosomes?