NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,989 terms related to cancer and medicine.

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HER1
The protein found on the surface of some cells and to which epidermal growth factor binds, causing the cells to divide. It is found at abnormally high levels on the surface of many types of cancer cells, so these cells may divide excessively in the presence of epidermal growth factor. Also called EGFR, epidermal growth factor receptor, and ErbB1.