MX1 and infection: The study of the expression of IFNs, antiviral factors, cytokines and chemokines after 6 (Supplementary Figure S4) and 24 (Figure 7C–F) h pots-infection with PRRSV showed significant increases in IFN-β, IFN-γ, Mx1, and OAS1 only at h 24 after the viral challenge, compared to non-infected pAMs.