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Immunohistochemical staining of the cartilage.
Notes: (A) SIRT1 protein. (B) VEGF protein. (C) PTEN protein. (D) AKT protein. (E) Caspase 9 protein. (F) MMP13 protein. (G) Type II collagen protein. 1) The bioactive resveratrol–PLA–gelatin porous nano-scaffold group. 2) The blank porous PLA–gelatin nano-scaffold group. 3) The no scaffold group. 4) The sham group.
