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Osteogenic differentiation of MSCs differed in dense- and nanofibrous-surfaced scaffolds: (a) osteogenic protein expressions (OPN, RUNX2, and BSP), analyzed by western blot at 7 and 14 days and (b) the intensities quantified by ImageJ (data normalized to a group Dense 7D).
Statistically significant difference noted (*p < 0.05; **p < 0.01; n = 3).
