Looking back on cancer thanks to new immunotherapy treatment

[KMSP-TV, February 18, 2016] The long punishing journey for Keith Mangan started 15 months ago. They tried more chemo but the cancer was accelerating.

Researchers at Abbott Northwestern Hospital in Minneapolis wanted to see if Mangan's colon cancer would respond to immunotherapy, a developing science that some believe could revolutionize the way cancer is treated.

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