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. 2024 Feb 23;31(14):20714–20771. doi: 10.1007/s11356-024-32174-8

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© The Author(s) 2024

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Fig. 5 — Chebulagic acid, metal ions, and functional groups in wool fiber produce a complex (this figure was adapted from Shabbir et al. 2017; Kasiri and Safapour 2013)