Vaccine may shift odds against deadly brain cancer

The first week of each month, Karen and Jerry Vaneman pack their car for a four-hour drive from Asheville, North Carolina, to the medical complex at Duke University. Inside the Preston Robert Tisch Brain Tumor Center, Karen waits patiently as a parade of doctors and technicians pokes and prods, taking samples of all kinds. On this day alone, she gives 21 vials of blood.


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