Pseudomembrane over tonsil and pharynx is caused by
Pseudomembrane is formed in diphtheria, which is caused by Corynebacterium diphtheria, which is a gram-positive bacillus Ref: Harshmohan textbook of pathology; 7th edition
Gram positive bacili
Gram negative bacili
SS RNA virus
Catalase negative cocci
Pharynx