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Effect of novel Lev/MSNs/n-HA/PU composite scaffold materials on biocompatibility and proliferation of BMSCs. (A) SEM micrographs of the BMSCs adhesion in different materials for 7 days. (B) MTT assay for proliferation of BMSCs cultured with different materials at 2, 4 and 7 days. Each experiment was repeated three times. “*” means P < 0.05.
