Scientist may never discover a single "cure". Cancer cells tend to exhibit a greater variety of traits than the healthy cells in your body. In other words, canc

Scientist may never discover a single "cure". Cancer cells tend to exhibit a greater variety of traits than the healthy cells in your body. In other words, cancer cells represent a more diverse population of cells in your body than your healthy cells, which should be near identical copies of each other (assuming that the healthy cells are all part of the same tissue of course). That is one reason why cancer is so hard to effectively treat. How do you find a drug that kills all the cancer cells in your body given that there is so much variety among the cancer cells? Even if you discover a drug that kills most of your cancer cells, and you use the drug, you will then be left with cancer cells that are immune to your drug.