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. 2017 Sep 12;7:11395. doi: 10.1038/s41598-017-11721-z

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© The Author(s) 2017

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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Particle mapping and size distribution of different tattoo pigment elements. Skin and lymph node of donor 4 were analyzed by means of synchrotron ν-XRF. (a,d) Ti and the Br containing pigment phthalocyanine green 36 are located next to each other. Average XRF spectra over the full area displayed in the regions of interest reveal the presence of Br, Si, S, Cl, Ca, Ti, Cr, Fe, Ni, Cu, and Zn. (b,e) Log scale mappings of Ti, Br and Fe in the same areas as displayed in (a) and (d) reveal primary particle sizes of different pigment species. (c,f) Magnifications of the indicated areas in (b) and (e), respectively.