What observation suggested that the elevated sensitivity of cancer cells to radiation therapy and chemotherapy was NOT due to their more rapid division?
A) Cells that divide more quickly reproduce more effectively.
B) Some cancer cells were observed to divide more slowly than their normal counterparts, yet they are still more sensitive to drugs and radiation than are normal cells.
C) Cells that divide more quickly reproduced less effectively.
D) Some cancer cells divide more quickly than their normal counterparts, yet they are still more sensitive to drugs and radiation than are normal cells.
E) Normal cells dividing more slowly than tumor cells are more sensitive to drugs and radiation.
Correct Answer:
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