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San Francisco and New York City are using bluegill fish to check for the presence of toxins in their water supply, which could be a possible target for a terrorist attack.
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BLUEGILLS

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San Francisco and New York City are using bluegill fish to check for the presence of toxins in their water supply, which could be a possible target for a terrorist attack.
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abtest

Detecting toxins

February 16, 2011 - 12:00am

San Francisco and New York City are using bluegill fish to check for the presence of toxins in their water supply, which could be a possible target for a terrorist attack.

Daily Bread