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Fig. 3 Characterization of exosomes. WJ-MSC-secreted exosomes collected from soy protein-coated (Exo_Soy) and uncoated (Exo_Control) culture dishes were, respectively, characterized for the surface markers CD81, CD9, and CD63 by (A) flow cytometric analyzer (ImageStreamX Mark II, Amnis) and (B) Western blot (Calnexin served as the negative marker of exosomes, and β-actin is the loading control). (C) DLS analysis was performed to characterize the respective diameters of these exosomes.
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