Koch(redirected from K's postulates)
Also found in: Dictionary, Thesaurus, Encyclopedia.
Robert, German bacteriologist and Nobel laureate, 1843-1910. See: Koch bacillus, Koch law, Koch old tuberculin, Koch phenomenon, Koch postulates, Koch-Weeks bacillus.
named after Robert Koch, a German bacteriologist.
Koch blue spot, Koch blue body
Koch's old tuberculin, used in the tuberculin test.
the role of delayed type hypersensitivity in the pathogenesis of tuberculosis.
a statement of the kind of experimental evidence required to establish the causative relation of a given microorganism to a given disease. The conditions are: (1) the microorganism must be present in every case of the disease; (2) it must be isolated and cultivated in pure culture; (3) inoculation of such culture must produce the disease in susceptible animals; (4) it must be observed in, and recovered from, the experimentally diseased animal.