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Figure 2.

Serum IL-8 (filled bar) and TNF-α (open bar) levels in control and infected pigs with S. typhimurium. Means ± standard deviation of the values obtained from 16 (0 dpi), 12 (1 dpi), 8 (2 dpi) and 4 (6 dpi) animals are indicated. The same letters above the bars indicate no significant differences (p < 0.05).