IFIT1 and infection: We found that both the mRNA (Fig 1A–1D) and protein levels (Fig 1E and 1F) of IFN-α, IFN-β, ISG56, and MX1 in PAMs induced by ASFV-intB318L infection were higher than those induced by ASFV-WT, especially at 24 hours post-infection (hpi).