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observed in linkage or surveillance studies. The studies should be designed to address questions of utmost concern, and they should be grounded within the epidemiological method or framework for study.
The Navy should conduct toxicity studies on chemical mixtures.
In many cases, exposure is not to an individual chemical, but to mixtures of chemicals. Risks to human health from multichemical exposures often are not well understood. Because multichemical exposures are found in the Navy workplace, the Navy should conduct research on the toxicity of these mixtures. Research also should be conducted to illuminate exposure scenarios associated with chemical mixtures.