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. 2017 Aug 29;7:9611. doi: 10.1038/s41598-017-10082-x

Figure 2.

Figure 2

(a) SEM image of a regenerated film that was treated 5 times via laser and then immersed in the artificial saliva for 3 days; (b) Cross-sectional image of the sample (a). The dotted red line in (b) shows the boundary between the newly grown layer and the previously grown layer. Scale bars, 1 μm.