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Quantification of calcium deposition by hMSCs encapsulated in PEG-bis-AP semi- IPNs containing native hyaluronic acid (HA) or dexamethasone-conjugated HA (HA-DXM) and cultured in growth media containing ascorbic acid and β-glycerophosphate with (+DX) and without (−DX) soluble dexamethasone supplementation (100 nM) for 7, 14, and 21 days. Statistical comparisons among groups are indicated as * (p < 0.05), ** (p < 0.01), or ns (p > 0.05).
