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PCR products of HBV DNA including IRE region from the serum of patients and control. M: DNA marker DL2000 A: pHBV4.1 plasmid B: pBHB 4 plasmid C: Chronic hepatitis B patient's serum(positive control) D-F:our patient's serums G:PAd/NS3 plasmid H: Serum of normal person I: TE (blank control).
