Table 1.

Quantitation of the percentage of differentiated progeny derived from human foreskin-derived skin-derived precursors cultured in the presence or absence of the combination of PDGF-AA and bpV(pic)

Percentage of differentiated cells positive for a certain marker [control vs. PDGF-AA + bpV(pic)] (Mean ± SEM)
Differentiation conditions	Condition A	Condition B	Condition C
Marker
β-III-tubulin	2.9 ± 0.9 vs. 1.8 ± 0.3	7.4 ± 1.3 vs. 12.3 ± 2.4	N/A
α-SMA	12.9 ± 2.8 vs. 18.4 ± 6.7	7.9 ± 1.6 vs. 7.9 ± 1.8	N/A
S100	Rare	13.2 ± 0.4 vs. 14.9 ± 2.7	N/A
Oil-red O	Rare	N/A	35.7 ± 3.8 vs. 35.6 ± 2.1

None of the pairs of data showed statistically significant difference (i.e. P > 0.05 in t-test).

Condition A: DMEM/F12 with 1% fetal bovine serum (FBS).

Condition B: Neurobasal medium with 1% N2 supplement, 4 μm forskolin, 10 ng mL⁻¹ heregulin and 1% FBS.

Condition C: DMEM/F12 with 1 mm dexamethasone, 1 mm isobutylmethylxanthine, 20 μg mL⁻¹ insulin and 10% FBS.

N/A, not applicable; α-SMA, smooth muscle alpha actin.