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(A-B), H&E, safranin O, and fast green staining of IVDs in rabbits at 4 and 12 weeks postoperative (scale bar = 2.5 mm). (C), Changes in the histological grades at 4 and 8 weeks postoperative (n = 6). (D-F), gene expression level of SOX9, aggrecan and collagen type II with or without treatment (n = 6).
