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The thymus (pl.: thymuses or thymi) is a specialized primary lymphoid organ of the immune system.Within the thymus, thymus cell lymphocytes or T cells mature. T cells are critical to the adaptive immune system, where the body adapts to specific foreign invaders.
The chemical composition of Thymus (thyme) includes a variety of essential oils, flavonoids, phenolic acids, triterpenes, and other compounds. The essential oils found in thyme include thymol, which is a major component responsible for the plant's antiseptic properties, and carvacrol, another primary component with similar functions. Other ...
Associated lymphoid organs are composed of lymphoid tissue, and are the sites either of lymphocyte production or of lymphocyte activation. These include the lymph nodes (where the highest lymphocyte concentration is found), the spleen, the thymus, and the tonsils. Lymphocytes are initially generated in the bone marrow.
The mucosa-associated lymphoid tissue (MALT), also called mucosa-associated lymphatic tissue, is a diffuse system of small concentrations of lymphoid tissue found in various submucosal membrane sites of the body, such as the gastrointestinal tract, nasopharynx, thyroid, breast, lung, salivary glands, eye, and skin.
Hassall's corpuscles (also known as thymic bodies) are structures found in the medulla of the human thymus, formed from eosinophilic type VI thymic epithelial cells arranged concentrically. These concentric corpuscles are composed of a central mass, consisting of one or more granular cells, and of a capsule formed of epithelioid cells.
Thymus transplantation results in that T cells are taught to avoid reacting with donor antigens instead, and may still react with many self-antigens in the body. Autoimmune disease is a frequent complication after thymus transplantation, found in 42% of subjects over 1 year post-transplantation. [15]
The genus Thymus (/ ˈ t aɪ m ə s / TY-məs; [3] thymes) contains about 350 [4] species of aromatic perennial herbaceous plants and subshrubs in the family Lamiaceae. It is native to the Old World. It is native to the Old World.
The thymus, as a primary lymphoid organ, mediates T cell development and maturation. The thymic microenvironment is established by TEC network filled with thymocytes (blood cell precursors of T cells) in different developing stages.