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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/).
(A) The general structure of liposomes. Reprinted with permission from [2]. Copyright (2021), Elsevier. (B) The location of cholesterol in the phospholipid bilayer membrane. Reprinted with permission from [24]. Copyright (2019), Elsevier.