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Dictionary of Cancer Terms

View in Spanish: Inhibidor de la proteasa

Protease inhibitor (PROH-tee-ays in-HIH-bih-ter)
A compound that interferes with the ability of certain enzymes to break down proteins. Some protease inhibitors can keep a virus from making copies of itself (for example, AIDS virus protease inhibitors), and some can prevent cancer cells from spreading.

Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.