Fifteen years ago, John Dick, a molecular biologist at the University of Toronto, discovered that not all cancer cells are created equal. Specifically, he showed that only a small population of self-renewing leukemia cells could create tumors, dubbing these cancer stem cells (CSCs). So, scientists asked: Can we wipe out cancer by targeting just these few rogue cells?
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Cancer's culprit
Breast cancer's genetic profile calls the cancer stem cell hypothesis into question.
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