cell-mediated hypersensitivity


cell-mediated hypersensitivity
type IV h.

Medical dictionary. 2011.

Look at other dictionaries:

  • cell-mediated hypersensitivity reaction — type IV hypersensitivity r …   Medical dictionary

  • cell-mediated cytotoxicity — cytolysis of a target cell by effector lymphocytes, such as cytotoxic T lymphocytes or NK cells; it may be antibody dependent (see antibody dependent cell mediated c.) or independent, as in certain type IV hypersensitivity reactions (q.v.) …   Medical dictionary

  • cell-mediated immunity — (CMI), cellular immunity immunity mediated by T lymphocytes either through release of lymphokines or through exertion of direct cytotoxicity, transmissible by transfer of lymphocytes but not serum; it includes type IV hypersensitivity reactions,… …   Medical dictionary

  • cell mediated immunity — Immune response that involves effector T lymphocytes and not the production of humoral antibody. Responsible for allograft rejection, delayed hypersensitivity and in defence against viral infection and intracellular protozoan parasites …   Dictionary of molecular biology

  • Antibody-dependent cell-mediated cytotoxicity — An immune response in which antibody, by coating target cells, makes them vulnerable to attack by immune cells. Antibody dependent cell mediated cytotoxicity is commonly (and blissfully) abbreviated ADCC. * * * (ADCC), antibody dependent cellular …   Medical dictionary

  • Hypersensitivity pneumonitis — Classification and external resources Micrograph of hypersensitivity pneumonitis. Lung biopsy. Trichrome stain …   Wikipedia

  • hypersensitivity — Abnormal sensitivity, a condition in which there is an exaggerated response by the body to the stimulus of a foreign agent. See allergy. contact h. 1. SYN: contact dermatitis. 2. SYN: delayed reaction. delayed h. 1 …   Medical dictionary

  • 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

  • hypersensitivity — In immunology, a state of excessive and potentially damaging immune responsiveness as a result of previous exposure to antigen. If the hypersensitivity is of the immediate type (antibody mediated), then the response occurs in minutes; in delayed… …   Dictionary of molecular biology

  • T helper cell — T helper cells (also known as effector T cells or Th cells) are a sub group of lymphocytes (a type of white blood cell or leukocyte) that plays an important role in establishing and maximizing the capabilities of the immune system. These cells… …   Wikipedia


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