In addition, p65 mRNA expression levels decreased in PCV2-infected 3D4/2 cells at 8, 12 or 24 h post-infection (p < 0.05 or p < 0.01), and IL-10 mRNA expression levels decreased in PCV2-infected 3D4/2 cells at 8 and 12 h post-infection (p < 0.05). The gene discussed is IL10; the disease is infection.