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. 2024 Jun 4;16(6):762. doi: 10.3390/pharmaceutics16060762

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© 2024 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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Chemical structures of phospholipids with ester, alkyl–ether, and vinyl–ether bonds at sn-1. The dotted boxes indicate (A) PC(18:0/20:4) with an ester bond, (B) PC(O-18:0/20:4) with an alkyl–ether bond, and (C) PE(P-18:0/20:4) with a vinyl–ether bond. FAs are linked to sn-1 and sn-2, and phosphocholine or phosphoethanolamine is linked to sn-3.