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NCI Dictionary of Cancer Terms

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bacillus Calmette-Guérin  listen  (buh-SIH-lus KAL-met-gay-RIN)

  A weakened form of the bacterium Mycobacterium bovis (bacillus Calmette-Guérin) that does not cause disease. Bacillus Calmette-Guérin is used in a solution to stimulate the immune system in the treatment of bladder cancer and as a vaccine to prevent tuberculosis. Also called BCG.