Methods ALT,the markers of hepatitis B virus(HBVM) and deoxyribonucleic acid of hepatitis B virus(HBV-DNA) were measured in 206 asymptomatic persons whose HBsAg were positive.

• 方法对206例无症状HBsAg阳性者进行ALT、乙型肝炎五项及乙型肝炎病毒脱氧核糖核酸(HBV-DNA)的检测。