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. 2019 May 28;9:7971. doi: 10.1038/s41598-019-44353-6

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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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(a) The spectra of intact Thiothrix sulfur globules measured through a range of hydration states: live (top), dried on slide for one-hour (middle), and dried on slide for two weeks (bottom); (b–d) Peak fits in the 400–500 cm⁻¹ range. Experimental data corresponds to color of the spectrum plotted in 8a; each fit profile is shown in gray; and Lorentzian peaks are shown in purple, blue, and orange. Spectra in (a) and (b–d) were normalized to the characteristic S₈ 473 cm⁻¹ peak.