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NCI Dictionary of Cancer Terms

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immunocytochemistry    (IH-myoo-noh-SY-toh-KEH-mih-stree)

  A laboratory test that uses antibodies to test for certain antigens in a sample of cells. The antibody is usually linked to a radioactive substance or a dye that causes the cells to light up under a microscope. Immunocytochemistry is used to help diagnose diseases, such as cancer. It may also be used to help tell the difference between different types of cancer.