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. 2021 Mar 26;16:2419–2441. doi: 10.2147/IJN.S303462

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© 2021 Kumar et al.

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Widely used strategies for formulation of different drug delivery systems-based lignin. (A) nanoparticles of lignin and drug mixture, (B) drug loaded lignin nanoparticles stabilized emulsion, and (C) lignin wraps drug into nanoparticles. Reproduced from Liu R, Dai L, Xu C, Wang K, Zheng C, Si C. Lignin‐based micro‐ and nanomaterials and their composites in biomedical applications. ChemSusChem. 2020;13(17):4266–4283. © 2020 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim.²