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Mouse lung metabolites associated with neuronal pathways are increased by low‐dose oral Cd. Lung tissue samples were extracted using acetonitrile and analyzed by high‐resolution LC‐MS with targeted data processing for neuronal metabolites. Biological reference standards containing known concentrations of metabolites were used to estimate quantities of (A) glutamate, (B) choline, (C) tryptophan, and (D) tyrosine. n = 8. *P < 0.05.
