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(A1) Schematic illustration of 3D-printed PCL/PLA/halloysite scaffolds; (A2) Optical photographs of 3D-printed scaffolds printed by varying halloysite (adapted from [306], under the Creative Commons Attribution License 4.0); (B) CNC, as a filler to develop XG/CNC-based scaffolds for repairing soft tissues (adapted with permission from [316], copyright 2022 Elsevier B.V.).
