Cytokines known as inappetence-inducing factors including IL-6, IL-1β, TNF, and IFN-g were not significantly different in the brain after infection, whereas IL-1α was significantly reduced (P < 0.0001) in the brain of both αCD8α treated and aIL-1a treated mice compared to RSV treated (Fig. 7B). This evidence concerns the gene IL1A and infection.