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. 2019 Mar 26;9:5188. doi: 10.1038/s41598-019-41735-8

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Extractive deposits in heartwood degraded by R. placenta. Raman images of samples degraded for 0 (a,b), 2 (c), 6 (d) and 8 (e,f) weeks produced by integrating lignin and extractive bands at 1550–1700 cm⁻¹, and the average Raman spectra of the week 0 and 2 (g,h) and the week 6 and 8 deposits (i,j). Deposits (arrows) are identified by their letter and number. All spectra have been baseline corrected and normalised by total intensity normalisation.