Interleukins are a group of proteins that play a crucial role in the immune system. They are produced by white blood cells and help regulate immune responses by facilitating communication between cells. Interleukins can promote inflammation, stimulate the production of other immune cells, and influence the growth and differentiation of various cell types. There are many different types of interleukins, each with specific functions. For example, Interleukin-1 is involved in the inflammatory response, while Interleukin-2 is important for the growth of T cells. Understanding interleukins is essential for developing treatments for various diseases, including autoimmune disorders and cancers.