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Canadian doctor says immunotherapy is a cancer-fighting miracle

New studies on immunotherapy are showing signs of effectiveness against more cancers than previously thought. Dr. Pam Ohashi, who researches immunotherapy at Toronto's Princess Margaret Hospital, says this is a triumphant moment for cancer treatment.
New studies on immunotherapy are showing signs of effectiveness against more cancers than previously thought. Dr. Pam Ohashi, who researches immunotherapy at Toronto's Princess Margaret Hospital, says this is a triumphant moment for cancer treatment. 10:03