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Representative examples of RT-PCR analyses of Apaf-1, DAPK and β-actin. Lanes 1 and 2 show samples of normal oral mucosa. Lanes 3–16 show samples of OSCC. RT-PCR, reverse transcription polymerase chain reaction; Apaf-1, apoptosis protease activating factor-1; DAPK, death-associated protein kinase; OSCC, oral squamous cell carcinoma; M, DL2000 Marker.
