TIL (Tumor-Infiltrating Lymphocytes)

Tumor-Infiltrating Lymphocytes (TILs) are a type of immune cells, specifically white blood cells, that have moved into a tumor. They are part of the body's natural defense system, attempting to attack and destroy cancer cells. The presence and amount of TILs within a tumor can provide valuable information about the body's immune response to the cancer and may influence treatment options and prognosis. Researchers are studying TILs to develop immunotherapies, which harness the immune system to better fight cancer.