This is indicative of more efficient viral clearance when ZFP36 and ZFP36L1 are absent from T cells and may explain why the lungs of dKO mice contain reduced numbers and frequencies of CD8+ T cells specific for IAV nucleoprotein peptide NP(366-374) compared to WT mice by day 10 after infection (Fig. 1f, g). This evidence concerns the gene ZFP36L1 and infection.