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(a) Formation of mineralized tissue within Gel and HA/Gel as illustrated by representative SEM images after 21 days of culture (original magnification: ×500 and ×1000). (b) ALP activity showing the potential of cell differentiation after rBMSCs were seeded to Gel and HA/Gel scaffolds for 1, 3, 5, and 10 days. (c) Real-time PCR analysis of the expression of osteogenic-related genes (ALP, RUNX2, Col, and OCN) in rBMSC-loaded Gel and HA/Gel scaffolds after 21 days of culture.
