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This page describes secondary (peripheral) lymphatic organs, and is part of Art Anderson's immunology 522 lecture for the Foundation for Advanced Education in the Sciences (FAES) at NIH. Click on
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With artistic drawings of the secondary organs!!!
a must visit!
Secondary lymphatic Tissues control the quality of immune responses. Differences among the various lymphatic tissues significantly affect the form of immunity and relate to how antigens are acquired by these organs. Lymph nodes are filters of lymph, the spleen is a filter of blood and mucosal associated lymphatic tissues acquire antigens by transcytosis to lymphoid tissue from the "external" environment across specialized follicle-associated epithelial cells.