Fig. 9. Gene expression of cell growth and osteoblastic phenotype related genes (ALP, COL-1, OSX and TGF-β1) during in vitro culture after 14 days of electrical culture. Expression level was normalized with respect to the control on day 14. Cell seeding density: 5 × 106 mL−1 gel. Statistical significance is denoted by * (p ≤ 0.05).
