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. 2020 Mar 31;8:247. doi: 10.3389/fbioe.2020.00247

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Copyright © 2020 Xu, Ye, Yuan, Zhang, Chen, Fan, Jiang, Jiang, Wang and Yu.

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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Masson's trichrome staining at 16 weeks post-transplantation. (A) Group A with/without hUCB-MSCs + 4% HA hydrogel composites; (B) Group B with/without hUCB-MSCs + 3% alginate:30% pluronic (1:1, v/v) composites; (C) Group C with/without hUCB-MSCs + 4% HA: 3% alginate: 20% pluronic (2:1:1, v/v) composites; (D) Group D with/without hUCB-MSCs + 4% HA: 3% alginate: 20% pluronic: chitosan (4:1:1:2, v/v); (E) Defect only and normal cartilage. Reproduced with permission from Chung et al. (2014).