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. 2022 Jul 22;10:941077. doi: 10.3389/fbioe.2022.941077

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Copyright © 2022 Shao, Shen and Liu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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In vitro and in vivo efficacy of the inhalable PLGA microparticles loaded with trans-Retinoic acid (ATRA). Reproduced with permission from O’Connor et al. (2019). Copyright © 2018 Elsevier B. V.