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Analysis of HBx gene integration in transgenic mice by PCR. 544 bp IL3 gene fragment and 346 bp fragment were amplified with positive and negative primers. Lane 1: 100 bp ladder Marker; Lane 2: C57-TgN (HBx) SMMU1 transgenic mice; Lane3: C57-TgN(HBx)SMMU3 transgenic mice; Lane 4: normal C57BL/6 mice.
