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. 2022 Feb 11;12(2):171. doi: 10.3390/metabo12020171

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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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Positive ionisation mode (+ve) ‘shotgun’ nESI-UHRAMS spectra of crude derivatised lipid extracts from E. coli grown under (A) EGP (O.D. = 1) and (B) SGP (O.D. = 4.6) conditions. * indicates a derivatised PE lipid.