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. 2019 Oct 21;12(20):3435. doi: 10.3390/ma12203435

Figure 6.

Figure 6

In vitro mineralization study of the pure PDLLA (a) and PCL (b) materials and their composites with original and modified NCC. The mineralization study was performed by alizarin red S assay. The intensity of the red color corresponds to the amount of calcium ions on the surface of the films.