Fig. 2

Effect of cholesterol level on cyclooxygenase-2 (COX-2) and microsomal prostaglandin E synthase-1 (mPGES1) expression in synovial tissues (ST) and the infrapatellar fat pad (IPFP). COX-2 expression in ST (a) and the IPFP (c). mPGES1 expression in ST (b) and the IPFP (d). GAPDH, glyceraldehyde-3-phosphate dehydrogenase