Fighting cancer using the body's own defense system is a promising treatment approach. Immune therapies have even become clinical routine in treating a few cancers such as malignant melanoma and prostate cancer. Natural killer cells (or NK cells) are considered to be particularly suitable weapons against cancer. They are part of the innate immune system and respond to a wide range of cancer cells of diverse origin. Moreover, NK cells also kill tumor cells that have lost a specific target and go unnoticed by other immune cells...
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