近年来乙型肝炎病原学有很大的发展,其中不少方面具有比较重要的临床意义,本文仅就这些方面加以简单的介绍。一、乙型旰炎病毒的结构及其各抗原抗体系统的临床意义(图1)。从图1可以看出,乙型肝炎病毒基本可分为3部分。一部分为外壳,含有表面抗原(HBsAg),一部分为核心,含有核心抗原(HBcAg)和e抗原(HBeAg),第三部分为乙肝病毒的脱氧核糖核酸(HBV—DNA)。表面抗原本身没有传染性,但因其常与乙肝病毒同时存在,故常被认为是传染性标 In recent years, hepatitis B etiology has great development, many of which have more important clinical significance, this article only a brief introduction of these aspects. First, the structure of B-type fever virus and the clinical significance of each antigen-antibody system (Figure 1). As can be seen from Figure 1, hepatitis B virus can be divided into three parts. Part of the shell contains HBsAg, a part of the core, containing HBcAg and HBeAg, and the third part is hepatitis B virus DNA (HBV-DNA). Surface antigen itself is not contagious, but often coexist with hepatitis B virus, it is often considered infectious label