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. 2019 Apr 29;9:6633. doi: 10.1038/s41598-019-43023-x

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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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Pictures and optical micrographs of selected garments: (a) BT, a 100% polyester t-shirt, (b) plane surface and (c) yarn of BT; (d) RT, a 100% polyester t-shirt, (e) plane surface and (f) yarn of RT; (g) GB, 100% polyester blouse of which 65% is recycled polyester, (h) plane surface, (i) warp and (l) weft yarns of GB; (m) GT, a top whose front is made of 100% polyester and whose back is made of a blend of 50% cotton and 50% modal (n) plane surface, (o) warp and (p) weft yarns of GT front polyester part, (q) plane surface and (r) yarn of GT back modal/cotton part.