Changes in chondrocyte gene expression after four-day treatments with DEX, TNFα, injury and their combinations. Values at the y-axis represent the expression level of each gene normalized to that of the no-treatment control (y = 1, dotted line). Values are mean ± SEM, n = 6 animals. * = P < 0.05 vs. no-treatment control. DEX: dexamethasone; SEM: standard error of the mean; TNFα: tumor necrosis factor alpha.