Figure 2.

Effect of sericin on nerve growth factor expression in spinal ganglion cells of diabetic rats (immunohistochemistry, × 200).

Nerve growth factor positive products were presented as brown yellow particles.

(A) High levels of nerve growth factor expression were observed in spinal ganglion cells of control rats.

(B) Significantly reduced levels of nerve growth factor expression were observed in spinal ganglion cells of model rats.

(C) Levels of nerve growth factor expression in spinal ganglion cells were significantly increased following sericin treatment in diabetic rats.