Fig. 4

The expression of mRNA NF-κB and TNF-α normalized to the housekeeping genes ACTB and GAPDH in the liver tissue of chickens infected with C. jejuni. Samples were analyzed at days 15, 22 and 30 of age; a) NF-κB /ACTB, b) TNF-α /ACTB, c) NF-κB /GAPDH and d) TNF-α /GAPDH. Error bars represent the mean values and standard errors of 6 isolators, each with 15 birds. Interactions between treatment and age effect significantly (p < 0.05). * Indicates significant difference between control and AgNP (p < 0.05)