Which of the following statements are part of
Koch's Postulates? Check all that apply.
The disease-causing microorganism must be
present in at least half of the cases of
disease.
The microorganism can be isolated and
grown in a pure culture.
The microorganism from the pure culture will
cause the disease in at least 80% of healthy
organisms.
A re-isolated microorganism may evolve into
a different species than the original.