Overexpression of cyclooxygenase-2 in human HepG2, Bel-7402 and SMMC-7721 hepatoma cell lines and mechanism of cyclooxygenase-2 selective inhibitor celecoxib-induced cell growth inhibition and apoptosis

Figure 2 Growth inhibitory effect of celecoxib on SMMC-7721 cell lines. A: Normal control; B: 25.00 mmol/L celecoxib for 6 h; C: 25.00 mmol/L celecoxib for 24 h; D: 50.00 mmol/L celecoxib for 48 h. (Original magnification, ×200).