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(A)Immunohistochemical staining of Col II in rat cartilage post-treatment defects. Scale bars, 500 μm and 100 μm. (B)Immunohistochemical staining of ACAN in rat cartilage post-treatment defects. Scale bars, 500 μm and 100 μm. (C) Quantitative analysis of the Col II content. (D) Quantitative analysis of the ACAN content.
