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. 2022 Feb 4;55(2):123–130. doi: 10.1007/s00795-022-00313-0

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© The Author(s) 2022

Open AccessThis 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — LVSEM observation of the segments of the surface of purple urinary bag in case 1 immersed in 1 N HCl (a), 1 N NaOH (b), 30% H₂O₂ (c), and chloroform (d). The insertions are the color of the immersion solution (left) and segment of purple urine bag (right) after 15 min. Magnification × 2000 (a, c, d) and × 3000 (b). The bars indicate 20 μm (a, c, d) and 10 μm (b)