It was showed that HBV DNA in 7 cases was postive,(the positive rate was 15.56%),the HBV DNA positive substance was localized mostly in nuclei of the hepatocytes,a few of HBV DNA in cytoplasm.

• 原位杂交表明 ,HBVDNA阳性 7例 (阳性率 15 5 6%25 ) ,阳性信号主要存在于肝细胞的胞核中 ,少数位于胞浆内 ;