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ICRS visual histological score of repaired tissue and nanoindentation test of repaired tissue. (A) ICRS visual histological score of repaired tissue. (B) Reduced modulus and (C) hardness of repaired cartilage. The dotted horizontal line represented the mechanical properties of native intact cartilage. The results were demonstrated by mean ± standard deviation. *P < 0.05; **P < 0.01; ***P < 0.0005; ****P < 0.0001
