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Protein levels in hASCs osteogenic culture. Alkaline phosphatase activity, evaluated on 7th and 14th day of culture in osteogenic conditions (a). Quantitative ELISA analysis of extracellular osteopontin (b), collagen I (c), and osteoclacin (d). Results expressed as mean ± SD. ∗ P value < 0.05, ∗∗ P value < 0.01.
