Editorial use only Toxicology research. Scientist loading a sample for high performance liquid chromatography (HPLC). HPLC is used to separate individ

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Editorial use only Toxicology research. Scientist loading a sample for high performance liquid chromatography (HPLC). HPLC is used to separate individual compounds from a mixture of compounds dissolved in a liquid. Photographed at the National Center for Toxicological Research, Jefferson, Arkansas, USA.

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