Figure 4.
DTMUV-infected ducks effectively up-regulate MDA5, MD88, TLR2, and TLR4 expression in the liver. Each young SPF duck was challenged by intramuscular inoculation with DTMUV. (A–D) Liver tissues of mock- and DTMUV-infected ducklings were collected at the indicated time points for examination of MDA5 (A), MyD88 (B), TLR2 (C), and TLR4 (D) mRNA expression using qRT-PCR. The average levels from three independent experiments are plotted. The error bars represent the SEs. * P < 0.05, ** P < 0.01.

