Question Detail
Question
According to Koch's postulates, what is the required step *after* isolating the specific pathogen from a diseased host and growing it in pure culture?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The second postulate states that the microorganism must be isolated from the diseased organism and grown in pure culture. The third postulate then requires that when the cultured microorganism is introduced into a healthy, susceptible host, it should cause disease.
Hint
Koch's postulates establish a direct cause-and-effect relationship between a microbe and a disease.