koch's postulates

Medical Dictionary

Koch's postulates pl.n.
The series of conditions that must be met in order to establish a microorganism as the causative agent of a disease, namely: it must be present in all cases of the disease; inoculations of its pure cultures must produce the disease in susceptible animals; and from these it must again be isolated and propagated in pure cultures.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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