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Cytotoxicity analysis of chondrocytes treated with different concentrations of baicalin for 2 days. The concentration at which the highest stimulation was observed (1.25 µmol/l) is indicated by the arrow. The coordinate (1.25, 1.15) is the fold change. Values are expressed as the mean ± standard deviation (n=3). *P<0.05, **P<0.01, ***P<0.001, for the experimental group vs. the control group. OD, optical density.
