Bacilli Calmette Guerin contains the avirulent strains of: (A) Human tubercle bacilli, (B) An tubercle bacilli, (C) Bovine tubercle bacilli, (D) Atypical mycobacteria
Answer is C. BCG is produced from strain Mycobacterium bovis Ref: Harrison&;s Principles of Internal Medicine; 19th edition; Chapter 202; Tuberculosis