Fig. 7. KGN combined with porous scaffold. (A) In vitro degradation (i) and KGN release results (ii) of shape-memory scaffolds with different KGN contents. (B) CCK-8 assay of BMSCs on scaffolds with different KGN contents. (C) KGN enhanced cartilage repair in vivo. This figure has been adapted from ref. 122 with permission from Elsevier, Copyright © 2020.