NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,032 terms related to cancer and medicine.

signature molecule
(SIG-nuh-cher MAH-leh-kyool)
A biological molecule found in blood, other body fluids, or tissues that is a sign of a normal or abnormal process, or of a condition or disease. A signature molecule may be used to see how well the body responds to a treatment for a disease or condition. Also called biomarker and molecular marker.