The lymphatic system is an essential part of the immune system, which helps the body fight infections or cancers. The lymphatic system consists of a network of vessels that drain tissue fluid (lymph) into lymph nodes, larger fluid-containing lymph ducts, and specialized organs involved in the immune system. The lymph nodes and organs act as a type of “filter,” removing invading organisms or abnormal cells from the lymph fluid and “processing” them in a way that allows the body to fight these harmful agents. Lymph is a clear whitish/yellowish fluid that contains white blood cells (lymphocytes), proteins, and some red blood cells.
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