johnin

johnin
A product used as a diagnostic agent, analogous to tuberculin but made from Mycobacterium paratuberculosis (the causative organism of Johne disease) grown in a broth medium containing Mycobacterium phlei (timothy hay bacillus); used as an allergen to provoke reactions in infected animals. [H. A. Johne]

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joh·nin 'yō-nən n a sterile solution of the growth products of Johne's bacillus made in the same manner as tuberculin and used to identify Johne's disease by skin tests, conjunctival reactions, or intravenous injection

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joh·nin (yoґnin) a filtrate of cultures of Mycobacterium avium subsp. paratuberculosis> (Johne bacillus), similar to tuberculin, used to produce a skin reaction (johnin reaction) in testing cattle for Johne disease.

Medical dictionary. 2011.

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Look at other dictionaries:

  • johnin reaction — a skin reaction like the tuberculin reaction, produced by filtrates of cultures of Mycobacterium avium subsp. paratuberculosis (see johnin); used in the diagnosis of Johne disease in cattle …   Medical dictionary

  • johnin — /yoh nin/, n. Vet. Med. a sterile solution prepared from the growth products of the bacillus Mycobacterium paratuberculosis, used chiefly in the diagnosis of Johne s disease. [john (see JOHNE S DISEASE) + IN2] * * * …   Universalium

  • johnin — joh·nin …   English syllables

  • johnin — ˈyōnə̇n noun ( s) Etymology: john (from Johne s bacillus) + in : a sterile solution of the growth products of Johne s bacillus made in the same manner as tuberculin and used to identify Johne s disease by skin tests, conjunctival reactions, or… …   Useful english dictionary

  • Tough movement — In formal syntax, tough movement is a term used to describe sentences of the form::(1) This problem is tough to solve.:(2) John is easy to please.The phenomenon is informally named like this because example sentences like (1) typically involve… …   Wikipedia

  • Johne — H. Albert, German physician, 1839–1910. See johnin …   Medical dictionary

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