<prompt> Interleukin 2 is secreted byCD4 cells T helper cellMacrophageCDS cellsCommon T cell  <response>: A CD4 cells T helper cell Interleukin - 2: Is produced by - T-helper cell or CD4 cells Function - It causes T cell growth activation Interleukin -1: Is secreted by phagocytes Function - T cell activation; Fever; Cachexia Interleukin - 3: Produced by T cells Function: Hematopoiesis Also remember: II-4, IL-6, IL-8, IL-10, IL-12 T cell, Mast cell, T cell Macrophage, Macrophages, T cells, B cells, macrophage 