Figure 4.

Immunohistochemical staining of IGF-1 in the sciatic nerves in different groups. The nerves were subjected to immunohistochemical staining with IGF-1 antibody. Representative images are shown. A – Injured sciatic nerves 1 week after 0.9% saline treatment; B – injured sciatic nerves 3 weeks after 0.9% saline treatment; C – injured sciatic nerves 5 weeks after 0.9% saline treatment; D – injured sciatic nerves 1 week after EPO (5000 U/kg) treatment; E – injured sciatic nerves 3 weeks after EPO (5000 U/kg) treatment; F – injured sciatic nerves 5 weeks after EPO (5000 U/kg) treatment. Magnification: 200×