NCI Dictionary of Cancer Terms

The NCI Dictionary of Cancer Terms features 8,413 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.

gene expression profile
(jeen ek-SPREH-shun PROH-file)
A laboratory test that identifies all of the genes in a cell or tissue that are making messenger RNA. Messenger RNA molecules carry the genetic information needed to make proteins. A gene expression profile may be used to find and diagnose a disease or condition or to see how well the body responds to treatment.