Experts say the United States is far better able to identify a biological agent that it was just two years ago.

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James Everett Dutschke of Tupelo, Mississippi, has been charged with possession and use of a biological agent in connection with that case.

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"Only a full analysis performed at an accredited laboratory can determine the presence of a biological agent such as ricin, " according to the bureau.

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If a chemical or biological agent binds to the electrode, it triggers a signal.

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James Woolsey, his entire suspected inventory of the biological agent anthrax would fill roughly half a standard semi's tractor trailer.

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Biological weapons experts said the biological agent is extremely difficult to turn into a weapon of mass destruction.

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