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Study: Asian carp DNA may not signal live fish

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TRAVERSE CITY, Mich. (AP) — Live Asian carp don't necessarily have to be present for their DNA to turn up in the environment, according to a government study released Wednesday that could intensify the debate over how to prevent the aggressive, hungry invaders from reaching the Great Lakes and other vulnerable waters. DNA is found in excrement, slime and scales from live fish. But the report by...

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