Microbiology Corynebacterium diphtheriae can be grown within 6-8 hours on: A Potassium tellurite media with iron B McConkey’s agar C Dorset egg medium D Loeffler’s serum slope 💡 Explanation Corynebacterium diphtheriae can be grown within 6-8 hours on: ✓ Correct Answer: D. Loeffler’s serum slope