Discoveries that revolutionized cancer care win Nobel Prize

Two researchers from the U.S. and Japan won the Nobel Prize in medicine on Monday for discoveries that have revolutionized cancer care, turning the body's immune system loose to fight tumors in an approach credited with saving an untold number of lives.

James Allison of the University of Texas M.D. Anderson Cancer Center and Tasuku Honjo of Kyoto University learned how cancer can put the brakes on the immune system — and how to release those brakes.