Which is not pyrogenic -: (A) IL-1, (B) TNF-a, (C) IL-4, (D) IL-6
Answer is C. Pyrogenic cytokines such as tumor necrosis factor (TNF), interleukin (IL)-1, IL-6, and interferons into the bloodstream in response to exogenous pyrogens. Reff: www.mayoclinic.com