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When the human body gets a cold, the immune system goes into action, killing the invading cells that are making you sick. However, when a cancerous tumor begins to grow, the immune system cannot detect it. A new cancer treatment, known as immunotherapy, is working to change this invisibility so that the immune system can fight off cancer itself, without the help of surgery and chemotherapy. Listen to learn how cancer cells work and how this groundbreaking treatment is fighting them.
Story Length: 7:04
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AIR DATE: 02/09/2015