NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,791 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

bleomycin
(blee-oh-MY-sin)
The active ingredient in a drug that is used to treat many types of cancer and is being studied in the treatment of other types of cancer. It comes from the bacterium Streptomyces verticillus. Bleomycin damages DNA and may kill rapidly growing cancer cells. It is a type of antineoplastic antibiotic.