The bacteria frequently used as an immuno modulator is -
Ans. is 'a' i.e., Corynebacterium parvum . Corynebacterium parum is frequently used as an immunomodulator. . It is a mixture of Propionibacterium species.
Corynebacterium parvum
Mycobacterium marinum
Chromobacterium violasium
Flavobacterium meningosepticum