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. 2023 Jun 9:1–13. Online ahead of print. doi: 10.1007/s11947-023-03136-8

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© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

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Fig. 2 — Response surface for EE% optimization of GTP-loaded liposome formulations: a lecithin:Tween 80 4:1, b lecithin:Tween 80 1:1, and c lecithin:Tween 80 1:4