Which statement is one of the four criteria that must be met to establish a causative link between a specific microbe and a disease, as proposed by Koch?

+1 vote

 

The disease organism can be confirmed as the same as that in the original organism by simple sampling of the diseased experimental animal's blood.

If organisms from the pure culture are injected into a healthy experimental animal, the animal may or may not exhibit symptoms of the disease.

The microbe must be present in individuals obviously suffering from the disease as well as in those not yet exhibiting symptoms.

The microbial organism must be isolated and grown in a pure culture outside the host organism.

 

asked Dec 28, 2012 in Biology by anonymous
    

1 Answer

+1 vote

 

The microbial organism must be isolated and grown in a pure culture outside the host organism.

 

answered Dec 28, 2012 by Panda ~Expert~ (1,557 points)

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