Figure 1From: Critical role of p38 MAPK for regeneration of the sciatic nerve following crush injury in vivo Histological assessment of nerve regeneration at four weeks after crush injury. At four weeks after crush injury, specimens of the crushed sciatic nerve were taken at 5 mm distal to the injury site from both sem (p38+/−) and wt (p38+/+) mice. As controls, tissue specimens were also taken from the contralateral uninjured sciatic nerve. (a) A 1 μm slice section was stained with toluidine blue and examined under a light microscope. Scale bar indicates 50 μm. (b) Axon diameter distribution of the sciatic nerve was evaluated using a set of three non-overlapping microscopic fields.Back to article page