STAT3 and infection: Figure 5J and L showed that, n or 20 h after T1012G infection, cells with STAT3-knockdown can induce 2.4-fold, 3.5-fold or 3.1-fold, 6.9-fold increase in the expression of p-PKR (Fig. 5J–M, ***P < 0.01, *P < 0.05, **P < 0.01, **P < 0.01).