Descriptopn：Interleukin-2 （IL-2） is a cytokine signaling molecule that regulates white blood cells.
It is produced primarily by T cells after activation by an antigen.
IL-2 signals through the IL-2 receptor which leads to the activation of at least 2 major signaling pathways which mediate cell growth, survival, activation induced cell death and differentiation.
A pro-inflammatory cytokine, IL-2 activates T cells to produce TNFα as well as IFNγ and controls immune response by contributing to the development of regulatory T cells.
Therefore IL-2 plays an important role in antigen specific immune responses
