Gene expression heat map for significant modules. The rows correspond to genes and the columns to samples, with samples groups indicated at the top. Genes colored green are under-expressed, while red indicates over-expression. Expression in the Magenta module (top panel) is lower in A/J compared to C57BL/6J for almost all probes. Both up- and down-regulated probes compose the Pink (middle panel) and Red (bottom panel) modules when comparing amygdala and hippocampus.