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Distribution of Toxicants

Distribution occurs when a toxicant is absorbed and subsequently enters the lymph (L. lympha, clear water) or blood supply for transport to other regions of the body. The lymphatic system is a part of the circulatory system and drains excess fluid from the tissues (Figure 5-1). Included in the lymphatic system are lymph capillaries, lymph nodes, aggregations of lymphoid tissue (tonsils, spleen, and thymus), and circulating lymphocytes (one of the five different types of white blood cells).