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. 2010 Oct;23(5):457–466. doi: 10.1089/vim.2010.0051

FIG. 3.

FIG. 3.

Serum and lung cytokine levels in PRRSV- and PRCV-infected pigs. Pigs were mock infected or infected with the indicated viruses as described in the legend to Fig. 2. Serum samples and lung lysates were assayed for different cytokines by ELISA. (A) IL-12, (B) IL-6, (C) IL-10, and (D) TGF-β. Each data point represents the average cytokine levels of 5–8 pigs from each indicated PID ± SE. “a” denotes a statistically significant difference (p < 0.05) between the mock- and dual-infected groups; “b” denotes a statistically significant difference (p < 0.05) between the PRCV- and dual-infected groups; “c” denotes a statistically significant difference (p < 0.05) between the PRCV- and PRRSV-infected groups; and “d” denotes a statistically significant difference (p < 0.05) between the mock- and PRRSV-infected groups, as analyzed by the nonparametric Kruskal-Wallis test.