IL33 (Interleukin 33): IL33 is a cytokine belonging to the IL-1 family, acting as an alarm signal when released by cells under stress or injury. It binds to the ST2 receptor, initiating inflammatory responses, and plays a crucial role in conditions such as allergies, asthma, and other inflammatory diseases. Research on IL33 investigates its dual function in promoting inflammation and offering protection, with potential implications for therapies targeting chronic inflammation and immune dysregulation.