fig9
Figure 9. Hydrogel delivery system with multiple components. (A) A 3D-printed MOF-TCP scaffold with Zn2+ and Co2+ for osteochondral defects[112]. (Open access). (B) Scaffolds enriched with Li and Si ions -synergistic effects for osteochondral regeneration. (Reproduced with permission[115]. Copyright 2018, Applied Materials Today). *P < 0.05, **P < 0.01, ***P < 0.0001.
