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Striatal serotonin levels are unaffected by manganese in developing and adult mice. Mice were exposed to 10 and 30 mg/kg MnCl2 as (A) juveniles (days 20–34), (B) adults (weeks 12–20), and (C) juveniles and adults (days 20–34 and weeks 12–20). No changes in levels of striatal serotonin (d-hydroxytryptamine; 5-HT) were detected in any exposure group. Significance is denoted by differing letters (p > 0.05).
