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Cancer Cell - A cell in the body that begins to divide and grow out of control, usually forming a malignant growth or tumor. Some cancers, such as leukemia (a blood cancer), do not form tumors. A cancer cell develops because of unrepaired damage to DNA (the molecules inside cells that carry genetic information). Cancer cells have the potential to spread throughout the body, crowding out normal cells and tissues. Different cancer cells can identify different cancers. This is especially helpful in determining whether a tumor has stayed in one location (in situ) or spread to other parts throughout the body(metastasized).
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