It doesn't stop cancer, it stops cell death from radiation, which incidentally may allow higher doses of radiation therapy. Of course, given that the purpose o

It doesn't stop cancer, it stops cell death from radiation, which incidentally may allow higher doses of radiation therapy. Of course, given that the purpose of radiation therapy is to cause cell death from radiation, it might be self-defeating. (Then again, if it protects normal cells better than cancer cells, it might be useful).