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Western blotting analysis. A: Effect of nicotine on COX-2 protein expression in TE-13 cells, 1: DMSO; 2: Nicotine 100 μg/mL; 3: Nicotine 200 μg/mL; B: Effect of nimesulide on COX-2 protein expression in TE-13 cells, 1: DMSO; 2: Nicotine 200 μg/mL; 3: Nicotine 200 μg/mL + Nimesulide 100 μmol/mL.
