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lymphoid tissue |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.02 sec. |
lymphoid tissueCells, 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. See also immunity; lymphatic system. lymphoid tissue [′lim‚fȯid ‚tish·ü] (histology) How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Infection with frog virus 3 (FV3), the type species of the genus Ranavirus, results in edema, hemorrhage, and necrosis of lymphoid tissue, hematopoietic tissue, liver, spleen, and renal tubules (3,5); mortality rates in free-ranging amphibians are >90% (6). Pathology and Genetics of Tumours of Haematopoietic and Lymphoid Tissues. Small numbers of splenic and peribronchiolar lymphoid tissue macrophages stained positive for brevetoxin. |
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