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Nature 421, 4 (2 January 2003) | doi:10.1038/421004a
Law sends laboratories into pathogen panic
Erika Check
When unknown parties mailed anthrax spores to several US addresses in the autumn of 2001, plant researchers at a herbarium at Harvard University began to get nervous.For years, the researchers had stored a set of innocuous-looking brown envelopes that contained samples of anthrax.
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