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. 2019 Oct 23;7:292. doi: 10.3389/fbioe.2019.00292

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Copyright © 2019 Almeria, Weiss, Roy, Tripisciano, Kasper, Weber and Egger.

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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Nanoparticle tracking analysis of MSC-derived EVs. The characterization was performed in scatter mode as described in Materials and Methods. (A) Mean particle sizes of MSC-derived EVs under normoxic or hypoxic conditions on day 2, 4 and 6; (B) mean number of particles/ml in MSC supernatants under normoxic or hypoxic conditions on day 2, 4, and 6. Data are presented as mean ± SD (n = 6; *p < 0.05; **p < 0.01).