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Nanoparticle tracking analysis of (A) HEK exosomes and (B) PC3 exosomes. (C) CD63 western blot of PC3 and HEK exosomes. (D,E) HEK and PC3 exosomes are positive for both CD9 and CD63 as determined by staining CD9+ bead bound exosomes with CD63-FITC.
