Mouse brain sections were stained for cannabinoid enzymes by immunohistochemistry method. Endocannabinoid metabolizing enzymes FAAH, MAGL and Cox-2 showed higher expressions at 3 days and returned to reduced levels at day 26 post-injury (A-D). As seen at CP, the cortex also shows signs of acute metabolism of 2-AG and AEA as FAAH, MAGL and Cox-2 were highly elevated at day 3 post-TBI with respect to sham (E-H), while only cox-2 remained slightly elevated at day 26th (E, H). Groups were compared by Two-Way ANOVA analysis with Tukey’s post-hoc comparison. Results were calculated as mean fluorescent intensity (MFI) ± SEM. (n=5; ns= not significant; ***p<0.001; ****p<0.0001 vs. sham; Scale bar 125μm).