Table 1.

Effect of growth factor overexpression on SC survival, recruitment, and differentiation in vivo

Series	Anti-human nuclei⁺ cells	GFP⁺ cells	PO⁺ structures	GFP⁺/PO⁺ structures	GFP^-/PO⁺ structures
Lesion	0	0	6 ± 2.7	0	6 ± 2.7
GFP	254 ± 32	188 ± 47	48 ± 11	26 ± 7	22 ± 5.8
BDNF	328 ± 49	264 ± 72	457 ± 82	31 ± 6	426 ± 71
NT-3	421 ± 27	368 ± 82	492 ± 91	127 ± 45	365 ± 82

Data represent the number of GFP⁺ cells and PO⁺ and GFP⁺/PO⁺ structures ± SEM per lesion in the four experimental series (n = 20 per series). Statistical differences were obtained between all groups for p < 0.001.