Interleukin 1 (IL1) is a cytokine that plays a significant role in the immune response. It is produced by activated macrophages and has several functions. Primarily, IL1 acts as an endogenous pyrogen, meaning it can induce fever by affecting the hypothalamus. This occurs because IL1 promotes the production of prostaglandins, which elevate the body temperature set point. Additionally, IL1 is involved in various other immune and inflammatory processes.
Out of the given options for the function of IL1:
The correct answer is: Endogenous pyrogen.
