Fig. 2From: Up-regulated expression of E2F2 is necessary for p16INK4a-induced cartilage injury(a) Determination of the secretion of SASP markers, including TGFβ, IL-6, IL-8, IL-1α, MMP3 and MMP13, using ELISA assay. **P < 0.01 vs. control. IL-1β, cells were treated with IL-1β. Data were shown as mean ± SD, n = 5Back to article page