Although there were several GO BP categories in common between the ACB-shell and CeA, there were relatively few genes in common within these categories. The ‘synaptic transmission’ category (Table 2) had only 2 genes in common, i.e., Gria1, Sty10; the ‘neurite development-cell projection morphogenesis’ combined category had one gene (Mtap2) in common between the ACB-shell and CeA.