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Associated Press
This undated image provided by Johnson & Johnson shows the drug Zytiga. The hormone-blocking pill approved in 2012 for certain men with advanced prostate cancer now also seems to help a wider group of men who were given it sooner in the course of treating their disease. In a study of nearly 1,100 such men, Zytiga doubled the time patients lived without their cancer getting worse. Study leader Dr. Charles Ryan of the University of California, San Francisco gave the results Saturday, May 2, 2012 at a meeting in Chicago of the American Society of Clinical Oncology. (AP Photo/Johnson & Johnson)

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