Transcriptomics of facial nerve injury and SRF-VP16 associated genes. Three days after facial nerve transection, facial nuclei were subjected to microarray analysis. Genes up- or down-regulated (≥ 4-fold) by facial nerve injury alone are depicted in blue. Genes specifically altered by SRF-VP16 upon nerve injury are highlighted in red. Genes in black color are modulated by SRF-ΔMADS-VP16. Genes depicted in green are modulated by lesion alone and SRF-VP16 or SRF-ΔMADS-VP16. Red colors indicate high, whereas blue colors represent low expression. All expression levels were normalized to the control condition (without lesion).