IFNB1 and infection: The results demonstrated that knockdown of chDDX3X expression resulted in reduced the expression levels of IFN-β mRNA and the activity of IFN-β promoter after poly(I:C) stimulation (Figures 5H,I), and the mRNA levels of IFN-β and the activation of the IFN-β promoters were inhibited in chDDX3X knockdown groups compared with control groups at an early stage of SH010 AIV infection (Figures 5J,K).