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The spleen and the thymus are also lymphoid organs of the immune system. The tonsils are lymphoid organs that are also associated with the digestive system. Lymphoid tissues contain lymphocytes, and also contain other types of cells for support.
3. Inflammation of the nodes: buboes; Lymph nodes can become cancerous tissues and metastesize. Other Lymphoid Organs. Spleen: Filters and purifies lymph nodes. (macrophages and lymphocytes in spleen fights bacteria, toxins and viruses, removes cellular debris). Distributes and recycles aged RBC);.