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(a) MTT cell viability assay. (b) ALP activity. (c) Runx2 osteogenic gene expression in hPDLSCs seeded onto Go-Ti and Na-Ti substrates. (d) OCN osteogenic gene expression of hPDLSCs seeded onto Go-Ti and Na-Ti substrates (reprinted with permission from Zhou et al. [75] following the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/) (accessed on 4 May 2022)).
