The expression level of IL-6 was upregulated in CEFs during the period of infection, peaking at 36 h p.i. and 8 h p.i. (88.22-, 7.60- and 21.21-fold, respectively) in response to infection with SS-10 and NH-10 or treatment with poly(I:C) compared to uninfected CEFs. The gene discussed is IL6; the disease is infection.