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Anthrax An army bio-defense laboratory apparently lost track of dozens of microbe specimens in the early 1990s -- including specimens containing anthrax bacteria. NPR's David Kestenbaum talks with guest host Melissa Block about how this news affects the ongoing investigation into anthrax spores sent through the mail.

All Things Considered

Anthrax

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Anthrax

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An army bio-defense laboratory apparently lost track of dozens of microbe specimens in the early 1990s — including specimens containing anthrax bacteria. NPR's David Kestenbaum talks with guest host Melissa Block about how this news affects the ongoing investigation into anthrax spores sent through the mail.