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“Chemotherapy was invented in 1960, when poison gas was found to kill cancerous tumors in one mouse. As it turns out, they were not quite able to replicate the success on other mice, but for some reason, for that initial one, it seemed to work quite well. This 'fluke' of an experiment was the original foundation of chemotherapy. When it became clear that chemo wasn't all that effective on its own, radiation was added, and now chemotherapy in conjunction with radiation therapy is the norm for many types of cancer.”