= Interleukin-2
A <cytokine> influencing T-cell growth and function, including use in some adoptive-cell-therapy regimens.
Secreted IL-2 acts through a <receptor> system whose abundance and composition affect responsiveness. It can support expansion and survival of activated <lymphocytes> while also contributing to immune regulation, so its effect depends on the responding <biological population>. <Immunobiology: The Immune System in Health and Disease, 5th edition by Charles A. Janeway, Jr. and others>[Chapter 8, T Cell-Mediated Immunity: activation and growth factors]{ref}
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