in·ter·leu·kin-3 (ĭn'tər-lōō'kĭn-thrē') n.
Abbr. IL-3 A lymphokine, released by helper T cells in response to an antigen or mitogen, that stimulates the growth of blood stem cells and lymphoid cells such as macrophages and mast cells.
Main Entry: interleukin–3 Pronunciation: -'thrE Function: noun : an interleukin that is a colony-stimulating factor produced especially by T cellsstimulated by mitogen or antigen and that promotes the proliferation and differentiation of various stem cells (as hematopoietic stem cells)
interleukin-3n. Abbr. IL-3 A lymphokine, released by helper T cells in response to an antigen or mitogen, that stimulates the growth of blood stem cells and lymphoid cells such as macrophages and mast cells.