Spatial specificity of modules. (A) Location of the caudoputamen and nucleus accumbens within the mouse brain. Left, coronal section; right, saggital section. (B-D) The midnight blue, purple and red modules, respectively. The ten genes closest to the module eigengene are selected for each module, and their expression is superimposed. For visual clarity, only the areas with medium-high expression intensity are shown, with the darker red signifying high intensity of the hybridization signal (see Methods).