Fig. 1

Effect of cholesterol level on inflammatory cytokine expression in synovial tissues (ST) and the infrapatellar fat pad (IPFP). Tumor necrosis factor (TNF)-α expression in ST (a) and the IPFP (d). Interleukin (IL)-1β expression in ST (b) and the IPFP (e). Interleukin (IL)-6 expression in ST (c) and the IPFP (f). GAPDH, glyceraldehyde-3-phosphate dehydrogenase