NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,470 terms related to cancer and medicine.
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- tumor-infiltrating lymphocyte
- listen (TOO-mer-IN-fil-TRAY-ting LIM-foh-site)
A type of
immune cell that has moved from the blood into a tumor to
try and attack the cancer. In cancer therapy,
tumor-infiltrating lymphocytes are removed from a
patient’s tumor and are then treated in the laboratory with
substances that activate the lymphocytes to help them
better kill the patient’s cancer cells. Large numbers of
these activated lymphocytes are then given back to the
patient to help the immune system fight
cancer. Also called TIL therapy.