lymphoid organ

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• Organ (anatomy) — For the musical instrument, see Organ (music). In biology, an organ (Latin: organum, instrument, tool , from Greek ὄργανον, organon, organ, instrument, tool [1]) is a collection of tissues joined in structural unit to serve a common function. [2] …   Wikipedia

• lymphoid tissue — 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… …   Universalium

• Organ xenotransplantation — Xenotransplantation is the transplantation of cells, tissues, or organs occurring between species. This includes body fluids, cells, tissues or organs that have had ex vivo contact with the live cells, tissues or organs of a different species… …   Wikipedia

• Lymphoid tissue — A part of the body s immune system that helps protect it from bacteria and other foreign entities. Lymphoid tissue is rich in lymphocytes (and accessory cells such as macrophages and reticular cells). The lymphoid tissue includes the lymph nodes …   Medical dictionary

• gut-associated lymphoid tissue — (= GALT) Peripheral lymphoid organ consisting of lymphoid tissue associated with the gut (Peyer s patches, tonsils, mesenteric lymph nodes, and the appendix) …   Dictionary of molecular biology

• Mucosa-associated lymphoid tissue — MALT redirects here. For germinated cereal grains, see Malt. The mucosa associated lymphoid tissue (MALT) (also called mucosa associated lymphatic tissue) is the diffusion system of small concentrations of lymphoid tissue found in various sites… …   Wikipedia

• Sex organ — Flowers are the sex organs of flowering plants. A sex organ, or primary sexual characteristic, as narrowly defined, is any of the anatomical parts of the body which are involved in sexual reproduction and constitute the reproductive system in a… …   Wikipedia

• Tissue, lymphoid — A part of the body s immune system that helps protect it from bacteria and other foreign entities. Lymphoid tissue is rich in lymphocytes (and accessory cells such as macrophages and reticular cells). The lymphoid tissue includes the lymph nodes …   Medical dictionary

• adenoid organ — a lymphoid structure in the lining of the oesophagus of Elasmobranchii …   Dictionary of ichthyology

• thymus — /thuy meuhs/, n., pl. thymuses, thymi / muy/. Anat. a ductless, butterfly shaped gland lying at the base of the neck, formed mostly of lymphatic tissue and aiding in the production of T cells of the immune system: after puberty, the lymphatic… …   Universalium

• immune system — Anat. a diffuse, complex network of interacting cells, cell products, and cell forming tissues that protects the body from pathogens and other foreign substances, destroys infected and malignant cells, and removes cellular debris: the system… …   Universalium