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. 2021 Oct 31;22(21):11830. doi: 10.3390/ijms222111830

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Characterization of human lung-tissue-derived Exosomes (i.e., exosome-enriched EVs. (i) Representative image for particle size distribution of lung-tissue-derived exosome in one sample as estimated using NanoSight NS300. Average particle size depicted as mean, mode, and particle concentration in lung-tissue-derived exosome samples (n = 3–5/group). (ii) Representative TEM images of lung-tissue-derived exosomes (n = 6). (iii) Immunoblot analysis of positive (CD63 and CD81) and negative (H4) exosomal markers derived from human lung tissue (n = 4).