Figure 4.

The micrographs of nerve cross-section of unpinealectomized control (A) and surgical pinealectomy group (B) chickens. Partly myelin sheath degeneration, increasing of vacuolization in the myelin sheath and elevation of axon diameter in the sciatic nerve of pinealectomy group were observed in comparison of the control chickens (B). Toluidine blue staining, scale bar for A and B = 10 μm.