STAT1 and infection: Further IFN and antiviral related proteins were upregulated upon infection with PeV-A3 (EIF2AK2, STAT1), or PeV-A1 (NCAM1, POM121), and downregulated upon PeV-A1 infection (EIF4G1, UBE2N, RANBP2, FLNA) (Fig. 3f).