Biology Question:
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Which of the following is NOT one of Kochs Postulates:

Answer:

1. the specific causative agent must be found in every case of the disease
2. the disease organism can be isolated in impure culture
3. inoculation of a sample of the culture into a healthy susceptible animal must produce the same disease
4. diseased organisms must be recovered from the body of the inoculated animal

Answer: B

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