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. 2022 Jan 18;11(2):126. doi: 10.3390/antibiotics11020126

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© 2022 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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Analytical characterization and EM analysis of MexAQ93R and MexAwt. (A) Analytical size-exclusion chromatography (SEC) analysis of MexAQ93R (solid trace) and MexAwt (dotted trace) samples. (B) EM analysis of the SEC peak fraction of MexAQ93R exhibiting circular particles. Inset: average image showing a hexagonal-shaped particle with a diameter of about 8–10 nm. Scale bar 10 nm. (C) EM analysis of the SEC peak fraction of MexAwt showing heterogenous particles in size compared with (B). Scale bar 100 nm.