Micro & Immunology · single question
Primary endodontic (necrotic root-canal) infections are predominantly:
Show answer and explanation
Correct answer: A. Obligate anaerobic
The necrotic canal is anaerobic → obligate anaerobes predominate in primary endo infection.
- A. Correct. The anoxic, nutrient-limited necrotic canal selects for strict (obligate) anaerobes.
- B. The canal environment is anaerobic; aerobes do not dominate.
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