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The antibacterial effect of novel Lev/MSNs/n-HA/PU composite scaffold materials. (A) Bacterial colony formation after treatment with material extracts at 1 st and 12 th day, and (B) Number of bacterial colony units. (C) The zone of inhibition (ZOI) around n-HA/PU and Lev/MSNs/n-HA/PU scaffold materials. (D) The diameter of ZOI around the materials. Each experiment was repeated three times. Representative results are shown. “*” means P < 0.05 compared with n-HA/PU group.
