Koch's postulates include all the following except:
A) when a sample of a pure culture is injected into a healthy host, it causes the same disease.
B) a sample of the microorganism from a diseased host can be grown in pure culture.
C) the microorganism can be recovered from an experimentally infected host.
D) the microorganism must be visible in the electron microscope.
E) the pathogen must be present in every individual with the disease.

Question

Quizplus · Accepted Answer

Koch's postulates do not require that the microorganism be visible in the electron microscope. The postulates focus on the isolation, culture, and reproduction of the disease in a healthy host.

Koch's Postulates Include All the Following Except