STMN1-/- differentially expressed genes on 2-color microarrays illustrated in heatmaps. (A) Heatmap showing 3953 transcripts filtered with a fold change threshold ≥ 1.2, showing 1997 up-regulated and 1956 down-regulated genes relative to stmn1+/+. (B) 437 transcripts filtered to a fold change level ≥ 2, showing 269 up-regulated and 168 down-regulated genes. Numbers 1 – 4 refer to replicates. Color scale bar indicates up-regulation in yellow and down-regulation in blue.