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Bar graphs with average brain metabolite ratios for the genu and splenium of the corpus callosum. NV, normal volunteers; 1st, subjects recovering from their first mild traumatic brain injury (MTBI); 2nd, subjects recovering from their second MTBI; 3+, subjects recovering from three or more MTBIs. *Denotes a significant (p<0.05) difference between NVs and MTBI groups, and error bars indicate standard deviations.
