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. 2022 Jun 30;16:913009. doi: 10.3389/fncel.2022.913009

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Copyright © 2022 Zhu, Zhang, Hao, Xu, Shu, Hou and Wang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Extraction and identification of UC-MSC-Exo. (A) Expression of exosome markers (CD63 and CD81) examined by western blot analysis. (B) Representative images showing the morphology of UC-MSC-Exo by transmission electron microscopy. Scale bar = 100 nm. (C) The Brownian movement of the UC-MSC-Exo. (D) NTA analysis demonstrating the diameter of exosomes which ranged from 56.07 to 115.71 nm, with a mean diameter of 75.66 nm.