NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,957 terms related to cancer and medicine.

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estrogen receptor test
(ES-truh-jin reh-SEP-ter test)
A lab test to find out if cancer cells have estrogen receptors (proteins to which estrogen will bind). If the cells have estrogen receptors, they may need estrogen to grow, and this may affect how the cancer is treated.