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Immunotherapy: The next frontier in cancer treatment?

from MedCity News

Scientists now know that cancer cells use a cloaking mechanism to make themselves invisible to our immune system. They do this by binding together two proteins. One protein is called PD-1, or programmed death 1, which sits on T-cells, known as the warrior cells of our immune system. The second is a PD-L1, or programmed death ligand 1, which sits on the surface of the cancer cell to shield it from an attack by the body's immune system. With this "shield" gone from the cancer cells, the tumor can no longer hide from the body's immune system. more

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