Fig. 3From: Application of stem cells and exosomes in the treatment of intracerebral hemorrhage: an updateThe secretion process and basic structure of exosomes. The cell membrane sags inward to form a multivesicular body (MVB) which then fuses with the cell membrane to discharge exosomes. Exosome-specific marker proteins include CD9, CD81, CD63, flotillin, TSG101, neuroide, and AlixBack to article page