Ectopic Lymphoid Tissue

Reference work entry

A loosely organized, poorly circumscribed aggregate of immune response cells (chiefly T lymphocytes) that forms at or near the site of a chronic inflammatory stimulus. Due to their proximity, the cells in such ectopic foci direct and regulate the adaptive immune response to the antigen(s) that is inciting the reaction more efficiently than can the more distant secondary lymphoid organs.


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© Springer-Verlag 2005