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Because identifying pathogens that cause disease is the first step toward preventing or curing the ail- ments they produce.
Okey, thanks i think i will pass the exam.
2. The pathogen must be isolated and grown in the laboratory in pure culture.
3. When the cultured pathogens are placed in new host, they should cause the same disease that infected the original host.
4. The injected pathogen should be isolated from the second host. It should be identical to the original pathogen
And Why are these rules important?
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