lymph nodes
Small masses of lymphatic tissue in the body that occur at various points along the major lymphatic vessels. Tonsils and adenoids are large lymph nodes. As the lymph passes through them it is filtered, and bacteria and other micro-organisms are engulfed by cells known as macrophages.
Lymph nodes are sometimes mistakenly called lymph ‘glands’, and the term ‘swollen glands’ refers to swelling of the lymph nodes caused by infection.
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