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Hepatitis B viral virus X protein (HBx) X1 and X2 fragments amplified by PCR from AH109-pAS2-1-X1 and AH109-pAS2-1-X2. X1 and X2 fragments of the expected size can be seen after gel electrophoresis (0.6% agarose). Lane 1, 100-bp DNA ladder; lanes 2–4, HBx X1 (216 bp) amplified with primers P1 and P2; lane 5, negative controls; lanes 6 and 7, HBx X2 (352 bp) amplified with primers P1 and P3.
