- Koch phenomenon
- if a guinea pig that has been previously infected with tuberculosis organisms is reinjected intracutaneously, the skin over the injected area undergoes necrosis; a superficial ulcer develops and heals quickly, and infection of regional lymph nodes is retarded. The phenomenon demonstrates development of ability to localize tubercle bacilli, which is the principle underlying tuberculin tests.
Medical dictionary. 2011.
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koch phenomenon — ˈkȯk , ˈkȯḵ , ˈkōk , ˈkäk noun Usage: usually capitalized K Etymology: after Robert Koch died 1910 German bacteriologist : the response of a tuberculous animal to reinfection with tubercle bacilli marked by necrotic lesions that develop… … Useful english dictionary
Koch phenomenon postulate tuberculin — (kawk) [R. Koch] see under phenomenon, postulate, and tuberculin … Medical dictionary
Koch's phenomenon — also Koch phenomenon n the response of a tuberculous animal to reinfection with tubercle bacilli marked by necrotic lesions that develop rapidly and heal quickly and caused by hypersensitivity to products of the tubercle bacillus … Medical dictionary
Koch's bacillus — kōks , käch əz or Koch bacillus kōk , käch n a bacillus of the genus Mycobacterium (M. tuberculosis) that causes human tuberculosis Koch kȯk (Heinrich Hermann) Robert (1843 1910) German bacteriologist. Koch is usually hailed as the founder of… … Medical dictionary
Koch — Robert, German bacteriologist and Nobel laureate, 1843–1910. See K. bacillus, K. law, K. old tuberculin, K. phenomenon, K. postulates, under postulate, K. Weeks bacillus. Walter, German surgeon, *1880. See K. node, K. triangle. * * * (kawk)… … Medical dictionary
phenomenon — 1. A symptom; an occurrence of any sort, whether ordinary or extraordinary, in relation to a disease. 2. Any unusual fact or occurrence. [G. phainomenon, fr. phaino, to cause to appear] adhesion p. a p. manifested by the adherence of antigen… … Medical dictionary
Abduction phenomenon — The term abduction phenomenon describes claims of non human creatures kidnapping individuals and temporarily removing them from familiar terrestrial surroundings. People alleged to have been abducted are called abductees or experiencers. The… … Wikipedia
Richard Koch — (born 1950) is a former management consultant, entrepreneur, and writer of several books on how to apply the Pareto principle (80/20 rule) in all walks of life. Koch has also used his concepts to make a fortune from several private equity… … Wikipedia
Ernst Nolte — (born 11 January 1923) is a German historian and philosopher, whose primary interest is the comparative study of Nazism, Fascism and Communism. His nationalistic views of German history have often proved controversial.… … Wikipedia
literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… … Universalium