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. 2022 Dec 17;18:100524. doi: 10.1016/j.mtbio.2022.100524

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© 2022 The Authors

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Fig. 16 — Schematic diagram of the structure of PCNs and nanoprotein capsules. (A) The synthesis process of the PCN by electrostatic interaction between cationic polymer PEI and anionic polymer HA. According to 2021 Journal of Nanomaterials [128]. (B) and (C) Showing that the negatively charged proteins of SOD1 or NGF entangled with polyelectrolyte polymers to form nanoprotein capsules. (D, E) The presentation of TEM of SOD1 nanozymes and their preservation for the protein activity. (B–E) Copright 2018 Journal of Controlled Release and 2019 Advanced Materials [19,129].