President Felipe Calderon, seen as the chief champion of Mexico's crime-fighting strategy, is not running for re-election.

CNN: STORY HIGHLIGHTS

That left NATO free to concentrate on shaping a new fighting strategy.

CNN: IT'S FLIGHT OR FIGHT

Taken together, the findings are provoking excitement among researchers and the drug industry that immunotherapy has finally arrived as a viable cancer-fighting strategy.

WSJ: New Cancer Drugs Use Body's Own Defenses