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Questions About Cancer? 1-800-4-CANCER

NCI Dictionary of Cancer Terms

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mutation  listen  (myoo-TAY-shun)

  Any change in the DNA of a cell. Mutations may be caused by mistakes during cell division, or they may be caused by exposure to DNA-damaging agents in the environment. Mutations can be harmful, beneficial, or have no effect. If they occur in cells that make eggs or sperm, they can be inherited; if mutations occur in other types of cells, they are not inherited. Certain mutations may lead to cancer or other diseases.

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