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. 2021 Jul 13;11(17):8129–8142. doi: 10.7150/thno.62069

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Characterization of 3D hMSC small EVs. (A) Image of 2D versus 3D cell growth. Scale bar = 100 μm. (B) Immunoblot analysis of hBM MSC-derived sEVs. (C and D) Nanoparticle tracking analysis of hMSC-EVs. (E) Electron microscopy of sEVs.