Table 1. Results of histopathologic evaluation.

	Subject	Neuronal degeneration	Axonal damage	Microglial and
		Grade	Grade	astrocytic infiltration
Sham	1	0/10	G-0	+
	2	1/10	G-0	+
	3	0/10	G-0	+
	4	0/10	G-0	+
	5	0/10	G-0	+
	6	0/10	G-0	+
Control	1	7/10	G-2	++++
	2	7/10	G-1	+++
	3	8/10	G-2	++++
	4	9/10	G-2	++++
	5	7/10	G-2	+++
	6	7/10	G-1	+++
Treatment	1	2/10	G-2	++
	2	3/10	G-2	+
	3	2/10	G-1	+
	4	2/10	G-0	++
	5	1/10	G-0	+
	6	2/10	G-0	+