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Home >Information for Patients > Dictionary Index

Dictionary of Cancer Terms

View in Spanish: Mutágeno

Mutagen (MYOO-tuh-jen)
Anything that causes a mutation (a change in the DNA of a cell). DNA changes caused by mutagens may harm cells and cause certain diseases, such as cancer. Examples of mutagens include radioactive substances, x-rays, ultraviolet radiation, and certain chemicals.



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