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Prevention of PA-induced NF-κB activation by Xn in human chondrocytes. Protein expression of p-IkBα, IkBα, p-p65, and p65 detected using western blotting (A) and quantified (B). C. Nuclear translocation of p65 observed by immunofluorescence. *P < 0.05, **P < 0.01, and ***P < 0.001.
