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(A) PLGA nanoparticles loaded with KGN, molecule structure of KGN, methacrylated HA (HAMA). (B) The brief operative treatment for cartilage defects repair. (C) The release of KGN from photo-crosslinked HA scaffold and the hyaline cartilage chondrogenesis [Reprinted from Ref. [67] with permission from ACS Publications © 2016 American Chemical Society].
