A) Koch
B) Pasteur
C) Rayer
D) Devaine
Correct Answer: A
Solution :
The germ theory of disease was propound by the German physician Robert Koch (1843-1910). He laid down a set of rules, known as Koch's postulates. These postulates are- [a] The same specific pathogen must be identified in each animal (host) that has the disease. [b] The pathogen must be isolated from a host and grown in a pure culture, in which no other kinds of cells are present. The original disease must be produced in the experimental hosts that are inoculated with the pathogen from pure culture. The same pathogen must be isolated from the experimental hosts, after the disease had been developed in them.
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