Cancer isn't one disease, and there isn't one cure. The menu of treatment options includes drugs (chemotherapy), surgery, and radiation; they are often used together or one after another. The tricky thing is that unlike viruses or bacteria, which are totally different organisms, cancer cells were once healthy human cells -- they were once us! So any chemotherapeutic agent is going to do some collateral damage. But how do these drugs work in the first place? Check out the answer below:
This lesson was developed with Charles Morton and Prof. John Essigmann, and animated by TED-Ed.
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