Fig. 4

The mRNA expression level of oxidative stress-related genes. Notes: (A) The mRNA expression level of NQO1. (B) The mRNA expression level of SOD. (C) The mRNA expression level of iNOS. (D) The mRNA expression level of HO-1. (E) The mRNA expression level of Keap1. (F) The mRNA expression level of Nrf2. (G) The mRNA expression level of Pi3kca. (H) The mRNA expression level of AKT. 75 μg/mL: 75 μg/mL FNB;50 μg/mL: 50 μg/mL FNB; 25 μg/mL: 25 μg/mL FNB; VC: VC control group; PCV2: PCV2 infection group; DMSO: RPMII-1640 with 0.05% DMSO; Control: Control group. **p < 0.01; *p < 0.05.