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A, B. Cell cycle results, group A: CG; B; Il-1 β (10 ng/ mL); C: IL-1β+PTE (10 μmol/L); D: IL-1β+PTE (20 μmol/L), the experimental results were repeated three times. The proportion of G0-G1 chondrocytes in group B (IL-1β group) was significantly increased, while G0-G1 chondrocytes in PTE group were significantly decreased. *: P < 0.05, **: P < 0.01, ***: P < 0.001, ****: P < 0.0001.
