Microarray analysis between severely and mildly compressed spinal cord in tip-toe walking Yoshimura ( twy) mice. Heat map (left panel) of 215 genes that differed significantly between the S and M groups (n = 8 mice per group). Upregulated genes in the S group are red, and downregulated genes are green. Scale is shown at the bottom. Pathway analysis terms (right panel) of the genes that differed between the S and M groups.