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mRNA and protein expression of Bax, Bcl-2, caspases, NF-κB, IκB-α, iNOS, COX-2, MMPs and TIMPs in buccal tissues. N, normal group; C, cancer (inoculated with U14 squamous cell carcinoma cells) group. Bcl-2, B cell lymphoma 2; Bax, Bcl-2-associated X protein; NF, nuclear factor; iNOS, inducible nitric oxide synthase; COX cycooxygenase; MMP, matrix metalloproteinase; TIMP, tissue inhibitors of MMPs; GAPDH, glyceraldehyde 3-phosphate dehydrogenase.
