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Identification of Exos. (a) Representative TEM image of Exos. Scale bar: 50 nm. (b) Presence of marker proteins of Exos (CD9, CD 81, Flotillin 1 and HSP 70). (c and d) Size distribution of Exos. c is the result of NTA; d is the result of NanoFCM. (e) Uptake of Exos by RCECs. The concentration of Exos is 20 μg/mL. Scale bar: 10 μm.
