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与δ抗原相关的肝炎,是由已知肝炎病原因子中一种最不常见的因子所引起。δ抗原最初是在持续性或慢性活动性乙型肝炎病人的肝细胞中作为细胞核的荧光被检出的。确实,δ抗原与HBV感染有着密切的联系。它似乎是一种有缺陷的病毒样传染性因子:它的复制需借助于HBV的合成。目前仅知道这种因子的一种血清型。在病毒样因子中,δ因子是较独特的:它由一种直径为35-37nm的颗粒所组成,这种颗粒类似大的HBsAg颗粒,并共有HBV的HBsAg外壳。δ因子的内部成份在形态
Hepatitis associated with the delta antigen is caused by one of the most uncommon factors in known hepatitis pathogens. The delta antigen was originally detected as fluorescence of the nucleus in hepatocytes of patients with persistent or chronic active hepatitis B. Indeed, δ antigen and HBV infection are closely linked. It appears to be a defective virus-like infectious agent: its replication is aided by the synthesis of HBV. Currently only one serotype of this factor is known. The delta factor is unique among virus-like factors: it consists of a 35-37 nm diameter particle that resembles a large HBsAg particle and shares the HBsAg envelope of HBV. The internal composition of the delta factor is in morphology