Fig. 13: Interleukin-2, Secreted
by an Activated T4-Lymphocyte Binding to an Activated
T8-Lymphocyte
IL-2 produced by an
activated T4-helper lymphocyte, binds to the IL-2 receptors on the activated
T8-lymphocytes. The subset
of T4-lymphocytes that normally interact with macrophages and T8-lymphocytes
to promote cell-mediated immunity are called Th1 lymphocytes.
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