Fig. 5.

Expressions of type I interferon in Peyer's patches from weaned piglets after infection with PDCoV strain CHN-GD-2016 at 3 d.p.i. and 7 d.p.i.

The mRNA expressions of IFN-α (A) and IFN-β (B) in Peyer's patches from weaned piglets after infection with PDCoV strain CHN-GD-2016 were examined with qRT-PCR using specific primers at 3 d.p.i. and 7 d.p.i. The mRNA expression level of these cytokines were calculated in relation to the expression level of GAPDH. Data are represented as mean ± SD, n = 4. **stands for p < 0.01, *stands for p < 0.05.