Gravis, Intermedius and Mitis are biotypes of:
Ans. B. Corynebacterium diphtheriaGravis, Intermedius, Mitis and Belfanti are biotypes of Corynebacterium diphtheria. Gravis causes most severe disease.
Clostridium perfringens
Corynebacterium diphtheria
Capnocytophaga
Klebsiella
Bacteria