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. 2009 Jan 28;106(7):2130–2135. doi: 10.1073/pnas.0813200106

Fig. 5.

Fig. 5.

Quantitative PCR analysis for ALP, OCN, and OPN. Plastic cell culture plate with osteogenic inducing media was used as a positive control for osteogenic differentiation. *, Significant differences between Ti, 30- and 50-nm nanotubes vs. 70- and 100-nm nanotubes for ALP, OCN, and OPN gene expressions (P < 0.01).