Cell-Mediated Immunity

Abstract

Cell-mediated immunity is an integral part of our body’s immune system. This type of immunity is mediated by T-lymphocytes, also called T-cells. The functions of cell-mediated immunity are important and include defense against intracellular bacterial and viral infections. This is achieved by activating macrophages to destroy phagocytosed microbes via helper T-lymphocytes, or by directly killing infected cells via cytotoxic T-lymphocytes.