NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,466 terms related to cancer and medicine.
We offer a widget that you can add to your website to let users look up cancer-related terms. Get NCI’s Dictionary of Cancer Terms Widget.
- listen (myoo-TAY-shun)
- Any change in the DNA sequence 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.
- mutation carrier
- listen (myoo-TAY-shun KAYR-ee-er)
- A person who has a mutated (changed) copy of a gene. This change may cause a disease in that person or in his or her children.