Differential gene expression during muscle regeneration. a Distribution of DEG of the three pair-wise comparisons. b Heat map of DEG. Sample names are listed below the heat maps and the expression-based hierarchical clustering separating CON from H9 and H18 samples is shown above it. Color scale (right) indicates gene expression (FPKM). FPKM <5 is shown in green and indicates low transcript abundance. FPKM >5 is shown in red and indicates high transcript abundance. DEG are ordered according to numeric clusters from Fig. 4, represented as a color bar on the left side (color code is shown in Fig. 4 over each cluster plot), listed in Additional file 3: Table S2, and Additional file 26: Figure S14 shows an enlarged heat map with the genes symbols on the left. c Venn diagram showing overlap of DEG between CON, H9, and H18 sample comparisons.