The bacteria frequently used as an immunomodulator is: (A) Corynebacterium parvum, (B) Mycobacterium marinum, (C) Chromobacterium violasium, (D) Flavobacterium meningosepticum
Answer is A. Corynebacterium parvum, which is frequently used as an immunomodulator, is a mixture of the Propionibacterium species. Reference: Textbook of Microbiology; Anathanarayan and panicker's; 10th edition; Page no: 246