Bacille Calmette-Guérin (BCG), an attenuated strain of Mycobacterium bovis, is widely administered as a vaccine for tuberculosis. BCG is also used as a therapy for superficial bladder carcinoma.
Slater, E. C., in Metabolic Inhibitors, 2 (edit. by Hochster, R. M., and Quastel, J. H.), 503 (Academic Press, New York and London, 1963).