Gilead Takes AIDS Drug-Cocktail Approach To Fighting Cancer [Getty Images]

Gilead Sciences Inc. signage is seen at the Gilead laboratory in Foster City, California, U.S., on Wednesday, August 10, 2011. Gilead Sciences Inc., the world's biggest maker of AIDS drugs, is re-entering the market for cancer medicines a decade after selling its oncology unit. Photographer: David Paul Morris/Bloomberg via Getty Images

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