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PNS promotes the proliferation and migration of ACL fibroblasts. A, B. The migration capability of cells was detected by wound healing assay after treatment with 0, 0.05, 0.1, 0.2 and 0.4 mg/ml of PNS. C. The cell viability was detected by MTT assay after treatment with different concentration of PNS. All experiments were repeated three times and the results were presented as mean ± SD. *P < 0.05, **P < 0.01, ***P < 0.001.
