Figure 2From: Transcriptional profiling of C57 and DBA strains of mice in the absence and presence of morphineEnzymatic assay of Comt activity in DBA and C57 strains. Nucleus accumbens (NAC), amygdala (AMY), and frontal cortex (FC) were dissected from DBA and C57 mice, and Comt activity was determined in homogenates, as described in the methods. *, P = 0.01; **, P = 0.002.Back to article page