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辅助性T（ Th细胞）1、Th2细胞可以分泌多种细胞因子，其中 Th1细胞分泌的细胞因子主要增强细胞免疫过程，有利于乙型肝炎病毒（ HBV ）的清除；Th2细胞分泌的细胞因子主要增强体液免疫过程，与HBV持续感染状态有关。机体正常时，Th1和Th2细胞功能处于动态平衡状态，维持机体正常的细胞免疫和体液免疫功能。因此，加强对Th1、Th2细胞分泌的细胞因子的了解，对 HBV感染的防治具有重要意义。“,”Both Th1 cells and Th2 cells can secrete a variety of cytokines.Cytokines secreted by Th1 cells mainly enhance the cellular immunity process and are conducive to the clearance of HBV;cytokines secreted by Th2 cells mainly enhance humoral immune process and are related to the state of persistent HBV infection.When the body is in normal state,the function of Th1 and Th2 cells is in a dynamic balance,main-taining the body′s normal cellular immunity and humoral immunity function .Therefore it is very important to know more about cytokines secreted by the Th1 cells and Th2 cells for the prevention HBV infection .