According to sequence and aligning HBV BCP and PreC gene, we found the mutations of BCP were grouped in TA1 TA2 and TA3 of TATA-like boxes. There were no insertion or deletion mutations, which were different from the report of Dong jing in Beijing.

• 通过测序和比对分析HBV BCP和PreC基因序列,发现BCP变异主要集中在TATA样盒的TA1、TA2、TA3,未见插入和缺失突变,与北京董菁的报道显著不同。