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Cyclooxygenase-2 (COX-2) level in lung cancer tissue and adjacent parenchyma. (a) COX-2 level was calculated as the ratio of COX-2/β-Actin. The results of Western-blotting displayed that the level of COX-2/β-Actin was significantly higher in lung cancer tissue than in adjacent parenchyma. (b) Representative images of the Western-blotting of COX-2 and β-Actin.
