tuberculin reaction

tuberculin reaction
tuberculin reaction n a skin reaction that occurs at the site of a tuberculin test <an induration measuring 10 mm or more is considered a positive tuberculin reaction for all individuals>

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induration or vesiculation as a delayed reaction at the site of a tuberculin test (q.v.), a positive result.

Medical dictionary. 2011.

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  • tuberculin reaction — noun see tuberculin test …   Useful english dictionary

  • tuberculin test — noun a skin test to determine past or present infection with the tuberculosis bacterium; based on hypersensitivity of the skin to tuberculin • Syn: ↑tuberculin skin test • Hypernyms: ↑skin test • Hyponyms: ↑Mantoux test, ↑tine test * * * …   Useful english dictionary

  • Tuberculin — is the name given to extracts of Mycobacterium tuberculosis, M. Bovis, or M. avium , used in skin testing in animals and humans to identify a tuberculosis infection [Tizard, I. R. (2004). Veterinary immunology: an introduction, seventh edition.… …   Wikipedia

  • Tuberculin test — Tu*ber cu*lin test The hypodermic injection of tuberculin, used as a test for past or present infection with tuberculosis. It is used both for humans and cattle. Note: In humans, a previous or acive infection with tuberculosis will cause a… …   The Collaborative International Dictionary of English

  • tuberculin test — a test for tuberculosis in which a hypersensitive reaction to a given quantity of tuberculin indicates a past or present infection. [1900 05] * * * ▪ medicine       procedure for the diagnosis of tuberculosis infection by the introduction into… …   Universalium

  • reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… …   Medical dictionary

  • tuberculin — 1. A glycerin broth culture of Mycobacterium tuberculosis evaporated to 110 volume at 100°C and filtered; introduced by Robert Koch for the treatment of tuberculosis but now used chiefly for diagnostic tests; originally known as Koch old t. (OT)… …   Medical dictionary

  • tuberculin — n. a protein extract from cultures of tubercle bacilli, used to test whether a person has suffered from or been in contact with tuberculosis. In the Mantoux test a quantity of tuberculin is injected beneath the skin and a patch of inflammation… …   The new mediacal dictionary

  • Fernandez reaction — The Fernandez reaction is reaction that occurs to signal a positive result in the lepromin skin test for leprosy. The reaction occurs in the skin at the site of injection if the body possesses antibodies to the Dharmendra antigen, one of the… …   Wikipedia

  • delayed hypersensitivity reaction — a reaction of cell mediated immunity, named in contrast to immediate hypersensitivity reactions because its onset is 24 to 72 hours after the antigenic challenge; the term is usually used to denote the subset of type IV hypersensitivity reactions …   Medical dictionary

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