Fig. 5.

Electron micrographs of right ligation of sciatic nerve. Dense and intact myelinated fibres (white arrow), unmyelinated nerve fibres (thick black arrow), and myelinated fibres enclosed by Schwann cells (thin black arrow) were found in the S&S group (A and B). Twisted and degenerated myelin sheath (white arrow) and infiltrating macrophage (white star) engulfing degenerated myelin whorls were observed in the C&S group (C and D). Occasional loose fuzzy fragments in the lamellar structure (white arrow) and vacuole formation in the axoplasm (white triangle), accompanied by the formation of new myelin sheath (thick white arrow), was observed in the C&U group.