What evidence suggested that the elevated sensitivity of cancer cells to radiation therapy and chemotherapy was not due to their more rapid division?

Question

Quizplus · Accepted Answer

The fact that some cancer cells divide more slowly than their normal counterparts, yet are still more sensitive to drugs and radiation, suggests that their increased sensitivity cannot simply be attributed to their more rapid division. This implies that the cancer cells may have other differences that make them more vulnerable to these treatments, such as changes in DNA repair mechanisms or metabolism.

What Evidence Suggested That the Elevated Sensitivity of Cancer Cells