People who live past 100 may owe part of their longevity to having an abundance of cancer-killing immune cells, researchers say. These rare T cells appear far more abundant in centenarians and supercentenarians than in younger adults.

People who live past 100 may owe part of their longevity to having an abundance of cancer-killing immune cells, researchers say. These rare T cells appear far more abundant in centenarians and supercentenarians than in younger adults.