1. The pathogen must be found in an animal with the disease and not in a
healthy animal.
2. The pathogen must be isolated from the sick animal and grown in a
laboratory culture.
3. When the isolated pathogen is injected into a healthy animal, the
animal must develop the disease.
4. The pathogen should be taken from the second animal and grown in laboratory
culture. The pathogen should be the same as the original pathogen.
1. What is indicated when, in spite of being injected with a pathogen isolated from a sick animal, another
animal remains healthy?



Answer :

Final answer:

Koch's Postulates are a set of guidelines used to determine the causative agent of a disease. If an animal injected with a pathogen isolated from a sick animal remains healthy, there may be an issue in fulfilling one of Koch's Postulates.


Explanation:

Koch's Postulates are a set of guidelines used to determine the causative agent of a disease. If an animal injected with a pathogen isolated from a sick animal remains healthy, it indicates a potential issue in fulfilling Koch's Postulates, particularly in the step where the cultured agent must cause the same disease when inoculated into a healthy, susceptible organism.


Learn more about Koch's Postulates here:

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