a variety of compounds(about 20) that are produced by lymphocytes, macrophages, and monocytes. They regulate the cell mediated response of the immune system. Interleukin-1 is involved in the triggering of the immune response, starting acute inflammation and maintaining chronic inflammation. Interleukin-2 is produced by helper T cells and induces pr... Found on http://www.encyclo.co.uk/local/20169
They are also referred to as cytokines. These are regulatory proteins that are secreted primarily by lymphocytes to help the interaction between the lymphocyte and a macrophage. Found on https://www.encyclo.co.uk/local/22445