For example, genes encoding several innate immune receptors and chemokines (such as TLR4, CD83, CCL2, CXCR4, CXCL5, IL1A and IL8)—several of which participate in the initiation of a T cell response during infection [61-64]—showed increased relative expression in the BTB animal group. The gene discussed is CXCL8; the disease is infection.