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WASHINGTON (AP) - Tests that determine whether toxic chemicals accumulate in food may be missing some hazardous materials and need to be updated, a Canadian researcher said Thursday.
It has long been known that toxins can accumulate in the food chain, rising to higher concentrations as larger animals eat smaller ones.
But current tests for this accumulation focus on foods of aquatic origin, Frank A. P. C. Gobas, an environmental chemist and toxicologist at Simon Fraser University in British Columbia said in a telephone interview.
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