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Immunohistochemical staining results of COL2, COL1, OPN, Wnt-5a and β-catenin for the PET, PET/BM-CaP and PET/ED-CaP groups at 12 weeks after surgery. Red arrows indicate the positive staining tissues. G, graft; B, bone; IF, interface. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
