thymic cortex

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• T cell — T cells belong to a group of white blood cells known as lymphocytes, and play a central role in cell mediated immunity. They can be distinguished from other lymphocyte types, such as B cells and natural killer cells by the presence of a special… …   Wikipedia

• 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

• Central tolerance — is the mechanism by which newly developing T cells and B cells are rendered non reactive to self[1]. The concept of central tolerance was proposed in 1959 by Joshua Lederberg[2], as part of his general theory of immunity and tolerance, and is… …   Wikipedia

• Regulatory T cell — Regulatory T cells (sometimes known as suppressor T cells) are a specialized subpopulation of T cells that act to suppress activation of the immune system and thereby maintain immune system homeostasis and tolerance to self antigens. The… …   Wikipedia

• Thymus — Infobox Anatomy Name = PAGENAME Latin = GraySubject = 274 GrayPage = 1273 Caption = Thymus Caption2 = The thymus of a full term fetus, exposed in situ. Precursor = third branchial pouch System = Artery = derived from internal mammary artery,… …   Wikipedia

• Hassall's corpuscles — Micrograph of a thymic corpuscle. H E stain. Gray s subject #27 …   Wikipedia

• Cell — The basic structural and functional unit in people and all living things. Each cell is a small container of chemicals and water wrapped in a membrane. Each cell in the human body there are 100 trillion cells in each of us contains the entire… …   Medical dictionary

• Neural top down control of physiology — concerns the direct regulation by the brain of physiological functions (in addition to smooth muscle and glandular ones). Cellular functions include the immune system’s production of T lymphocytes and antibodies, and nonimmune related homeostatic …   Wikipedia

• Thymus-Epithelzelle — Thymus Epithelzellen spielen bei der Selbsttoleranz eine wichtige Rolle. Anders als in allen anderen bekannten Zellen werden in medullären Thymus Epithelzellen Eiweiße (Proteine) gebildet, die für die Zelle selbst keine Funktion haben. Sie werden …   Deutsch Wikipedia

• Artery — A vessel that carries blood that is high in oxygen content away from the heart to the farthest reaches of the body. Since blood in arteries is usually full of oxygen, the hemoglobin in the red blood cells is oxygenated. The resultant form of… …   Medical dictionary

• Vein — A blood vessel that carries blood low in oxygen content from the body back to the heart. The deoxygenated form of hemoglobin (deoxyhemoglobin) in venous blood makes it appear dark. Veins are part of the afferent wing of the circulatory system… …   Medical dictionary