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. 2022 Feb 22;14(3):480. doi: 10.3390/pharmaceutics14030480

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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/).

PMC Copyright notice

(A) Schematic illustrations for the construction of chitosan/alginate-stabilized perfluorohexane (PFH) nanodroplets and the ultrasound-responsive and pH-responsive drug release. Reproduced with permission from [92], Int J Biol Macromol, 2021. (B) Schematic illustration of theranostic nanoprobes showing tunable size and performance in vivo derived from multi-stimulation sensitivity. Reprinted from Journal of Controlled Release. Reproduced with permission from [93], ACS Nano, 2018.