Table IV.

Regeneration of myelinated fibers in the injured sciatic nerves in different groups at 28 day

Group	Myelinated fiber number	Axon diameter [µm]	Myelin sheath thickness [µm]
Control	106.3 ±12.5	2.96 ±0.15	3.54 ±0.41
A	46.4 ±18.2	0.97 ±0.06	2.58 ±0.23
B	73.5 ±9.4*	1.96 ±0.27*	3.36 ±0.58
C	78.4 ±8.7*	1.78 ±0.35*	3.41 ±0.33
D	97.2 ±14.88#	2.56 ±0.38* #	3.43 ±0.47

Data are expressed as x ± SD. Group A – 0.9% saline treatment, group B – dexamethasone (1 mg/kg) treatment, group C – vitamin B₁₂ (2 mg/kg) treatment, group D – dexamethasone (1 mg/kg) and vitamin B₁₂ (2 mg/kg) treatment.

^*p < 0.05 vs. group A.

^#p < 0.05 vs. group B and C