Three Growth Factors Induce Proliferation and Differentiation of Neural Precursor Cells In Vitro and Support Cell-Transplantation after Spinal Cord Injury In Vivo

Table 1

Different concentrations/combinations of growth factors used in vitro.

Group no.	1^st growth factor (concentration)	2^nd growth factor (concentration)	3^rd growth factor (concentration)
1	—	—	—
2	EGF (10 ng/ml)	bFGF (10 ng/ml)	—
3	EGF (20 ng/ml)	bFGF (20 ng/ml)	—
4	EGF (20 ng/ml)	bFGF (20 ng/ml)	PDGF-AA (6 ng/ml)

EGF = epidermal growth factor; bFGF = basic fibroblast growth factor; PDGF-AA = platelet-derived growth factor AA.