Lymphokine

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Lymphokines are a subset of Cytokines that are produced by immune cells.

Lymphokines, which are produced by T cells, direct the immune system response by signaling between its cells. Lymphokines attract macrophages to the infected site and prepare them to attack the invaders.

Cytokine is a general term for a large group of protein molecules that signal between cells during immune responses. Cytokines produced by T lymphocytes are lymphokines, while those made by mononuclear phagocytes are monokines.