Cells, tissues, and organs composing the immune system, including the bone marrow, thymus, spleen, and lymph nodes. The most highly organized components are the thymus and lymph nodes, and the least organized are the cells that wander in the loose connective-tissue spaces under membranes lining most body systems, where they can establish lymph nodules (local lymphocyte production centre) in response to antigens. The most common lymphoid tissue cell is the lymphocyte. Others are macrophages, which engulf foreign materials and probably alter them to initiate the immune response, and reticular cells, which produce and maintain thin networks of fibres as a framework for most lymphoid organs. Seealso immunity; lymphatic system.
Learn more about lymphoid tissue with a free trial on Britannica.com.
New research indicates that GALT may continue to be a major site of HIV activity, even if drug treatment has reduced HIV count in the peripheral blood.
Bronchus-associated lymphoid tissue lymphoma and Mycobacterium tuberculosis infection: an unusual case and a review of the literature.(Case study)
Jun 01, 2007; Bronchus-associated lymphoid tissue lymphoma is a rare disease. It is the most common form of primary pulmonary lymphoma but...
Scientists at Okayama University Graduate School of Medicine Publish New Data on Mucosa-Associated Lymphoid Tissue Lymphoma.(Report)
May 01, 2012; New research, "Minimally Invasive Procedure for Accurate Diagnosis of Mucosa-associated Lymphoid Tissue Lymphoma of the Head and...