<prompt> The following is not a pyrogenic cytokineIL-1TNFSubstance PProstaglandins  <response>: Ans. c Substance PRef: J Infect Dis. 1999 179 Supplement 2: S294-S304. doi: 10.1086513856, Harrison 18th ed:2666.IL1 AND TNF are well known pyrogenic cytokines In the hypothalamus, the prostaglandins, especially PGE2, stimulate the production of neurotransmitters that reset the temperature set point at a higher level, hence pyrogenic 