Polio Virus Shrinks Brain Tumor

Duke University Medical Center researchers shrink patient's brain tumor with a modified polio virus.
1:09 | 07/18/13

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Transcript for Polio Virus Shrinks Brain Tumor
Doctors hope she is the polio virus scariest quality its ability -- cells and kill them to treat cancer. Duke university medical center has been experimenting with the virus notably in 22 year old Stephanie list -- -- -- diagnosed with mild blast on -- the most aggressive form of brain cancer she originally had surgery to remove a tumor in 2010. When it returned two years later doctors tried a different approach injected a modified polio virus into her brain and let the virus go to work. And then here. Was also the children to treat as. And how can barely see anything. As he just solace comes tumor shrunk from the -- lying to the size of the doctors in a modified virus is able to enter the cancer cells and -- -- but the healthy brain tissue unharmed. And this worked for most of the people in the trial of the eight patients who got the injection only two did not respond to the treatment. She has also showed promise in shrinking melanoma prostate and pancreatic -- in the lab but it won't be widely available anytime soon. After still need more time to conduct -- house.

This transcript has been automatically generated and may not be 100% accurate.

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