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A Scientist's Quiet Life Took a Darker Turn

For most of his career, he was a casting agent's vision of a bench scientist: shy, eccentric, nerdy, soft-spoken. But sometime this spring, with the FBI closing in on him, Bruce E. Ivins's life took a dark turn that frightened his closest friends.

By Joby Warrick, Marilyn W. Thompson and Nelson Hernandez

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