Posted on November 17th, 2011 by
Cancer kills about 570,000 Americans each year, but there's hope that an experimental treatment could bring those numbers down. The idea is to train the body's own immune system to fight the disease, and if it works, it might be a way to prevent cancer from occurring at all…More about immunity vaccines from the Mayo Clinic
CBS News, Dr. Jonathan LaPook, 11/17/11
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