IFNB1 and infection: Meanwhile, the mRNA expression of Ifnα, Ifnβ, Ifnγ, Tnfα, and selective chemokines (Cxcl1, Cxcl2, and Ccl5) by leukocytes was lower in the blood of Ddx25-Tg mice on day 1 post-infection (Figure 4F).