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Sphingolipid-metabolizing enzyme gene expression after TBI. Brain samples were prepared from the ipsilateral hemisphere after TBI and sham-injured brain (control). RNA was extracted and converted to cDNA for analysis by real-time PCR using a PCR array as described under “Experimental Procedures.” The data are presented as -fold change TBI/sham injury and are means of three independent experiments. The dashed line represents a 3-fold change. *, p < 0.05; n = 6. Error bars, S.E.
