Fig. 6.

(A) Effect of adult Δ9-tetrahydrocannabinol (THC) exposure on histone modification 2, 24 and 48 hours after the last THC injection. Data are expressed as means ± standard errors of the mean (SEM) for at least 4 animals per experimental group. *p < 0.05 compared with controls (Student t test with Welch correction). (B) Effect of adult THC exposure on the expression of genes closely associated with the endocannabinoid system or synaptic plasticity 24 hours after the last THC injection. Data are expressed as log2 ± SEM for 4 animals per experimental group. *p < 0.05 compared with controls (Student t test with Welch correction). VEH = vehicle.