IFIT2 and infection: The innate immunity responses, including type I and III interferon (IFN-β, IFN-κ, IFN-λ1), ISG (ISG54, MxA, MxB) and TLR3 mRNA expression, were studied at 8, 24 and 48 hours post transfection, which equal to 4, 20 and 44 hours post infection (hpi), respectively.