Microbiology TRUE about corynebacterium diphtheriae are all, EXCEPT: A Has metachromatic granules B Does not invade deeper tissues C Toxigenicity demonstrated by elek's test D Toxin mediated by chromosomal gene 💡 Explanation TRUE about corynebacterium diphtheriae are all, EXCEPT: ✓ Correct Answer: D. Toxin mediated by chromosomal gene