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Turtles are useful for studying bioaccumulative pollutants such as mercury (Hg) because they have long life spans and feed at trophic levels that result in high exposure to anthropogenic chemicals. We compared total Hg concentrations in blood and toenails of three species of turtles (Chelydra serpentina, Sternotherus odoratus, and Graptemys geographica) with different feeding ecologies from locations...
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