Programmed regulation of microenvironment remodeling and bone regeneration for bone repair by coaxial hydrogel scaffold with ultrasound-activated drug delivery.

Furthermore, the results of the CCK-8 assay showed that the number of cells in each group increased with the extension of culture time, showing a clear trend of proliferation ( Fig. 3 B).

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It was found that the methylene proton peak of ALN appeared at 2.8 ppm, and the proton peak showed an increasing trend with the increase of ALN input ( Fig. 1 B).

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