Jim Allison, Ph.D., an M.D. Anderson researcher whose ground breaking research enabled doctors to enlist the immune system to fight cancer. For Sunday story on the new approach. With important quot;Breakthrough Prize in Life Sciencesquot; in his lab at the McCombs Institute for the Early Detection and Treatment of Cancer, 7555 Fannin Street.br/1/24/14 (Craig H. Hartley/For the Chronicle)