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A form of bioaccumulation in which the digestive and/or metabolic processes of the organisms through which a chemical compound migrates lead to increased concentration in successive host species greater than the arithmetical sum of the amounts absorbed from organisms lower in the food chain. An example is the increasing concentration of fat-soluble compounds, such as PCBs, DDT, and mercury, in the livers of plankton, fish, fish-eating birds, and animals.

Subjects: Public Health and Epidemiology.

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