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Methylation status of the ATM promoter in several samples. Marker: standard protein; 1–2: HCC surgical tissues; 3: HCC puncture specimens; 4: HCC adjacent liver tissue; 5: methylated control; 6: unmethylated control; M: methylated bands; U: unmethylated bands. BSP results of methylated and unmethylated PCR products. ATM: ataxia telangiectasia mutated gene.
