fig4
Figure 4. The modification of biomaterials for osteochondral repair. (A) Modify electroscope PCL scaffolds loaded with TGF-3 and stem cells for cartilage regeneration[89]. (Open access). (B) A catechol-modified chitosan (CSC) hydrogel is modified by horseradish peroxidase/hydrogen peroxide (HRP/H2O2) for osteochondral repair. (Reproduced with permission[90]. Copyright 2022, Journal of Materials Chemistry B).*P < 0.05, **P < 0.01, ***P < 0.0001.
