Medical Dictionary

immune system


immune system

noun

Definition of IMMUNE SYSTEM

:  the bodily system that protects the body from foreign substances, cells, and tissues by producing the immune response and that includes especially the thymus, spleen, lymph nodes, special deposits of lymphoid tissue (as in the gastrointestinal tract and bone marrow), lymphocytes including the B cells and T cells, and antibodies
March 04, 2015
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