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Iron oxide nanoparticles for exosome enrichment: a TEM image (a) and magnetic response (b) of Tf functionalized iron oxide decorated exosomes from blood serum [51]; PEG functionalized iron oxide nanoparticles for exosome purification: (c) principle and (d) exosome quantification before and after purification and SDS-PAGE gel of purified exosomes [20].
