Scientists are creating a new kind of vaccine that teaches the immune system to intercept a type of brewing colon cancer before it turns into a full-fledged tumor.
Dr. Stacy Norton was only 7 years old when her mother died of colon cancer, one of several family members struck by aggressive tumors at unusually young ages. Decades later, Norton rolled up her sleeve to help test if a new kind of vaccine might prot... [5587 chars]