Objective: To study the effects of Bushen Jiedu decoction on expression of umbilical cord blood pDCs TLRg, IRF7, IFN-alpha on maternal infected with HBV during immune tolerance phase. Methods: Ten maternals infected with HBV during immune tolerance phase were enrolled in this study. Umbilical cord blood pDCs were cultured in vitro. At the same time, the plasma containing drug of Bushen recipe (liu wei di huang wan) , Jiedu recipe (gan lu xiao du dan) , Bushen Jiedu recipe (liu wei di huang wan and gan lu xiao du dan)was preparated. On t...