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. 2014 Nov 27;14(12):22552–22563. doi: 10.3390/s141222552

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© 2014 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).

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Figure 4. — Amide I region of Raman spectrum of control PDLs (a,c,e) and after orthodontic treatment of 2 days (b), 7 days (d) and 14 days (f) respectively. Experimental data have been fitted by a convolution of Lorentzian or Gaussian functions. Raman mode assigned to α-helix is underlined by the red line.

Figure 4. — Amide I region of Raman spectrum of control PDLs (a,c,e) and after orthodontic treatment of 2 days (b), 7 days (d) and 14 days (f) respectively. Experimental data have been fitted by a convolution of Lorentzian or Gaussian functions. Raman mode assigned to α-helix is underlined by the red line.