Figure 6.

Evaluation of the systemic levels of different host cytokines at the time of challenge in swine infected with Pret4Δ9GL virus. Average and 95% confidence intervals of 15, 10, and 15 animals from groups challenged at 7, 10, and 14 days post Pret4Δ9GL infection are presented. Values are expressed as concentration per mL of serum determined as described in material and methods. IFN, interferon; IL, interleukin; MCP2, monocytes chemoattractant protein 2; OAS1, 5′-oligoadenylate synthetase 1; PKR, protein kinase R; TGF, transforming growth factor; TNF, tumor necrosis factor; VCAM-1, vascular cell adhesion molecule 1.