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. 2022 Nov 10;12:19239. doi: 10.1038/s41598-022-23831-4

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© The Author(s) 2022

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 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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Photomicrographs of longitudinal section of the different groups of the body wall of earthworms (Lumbricus castaneus) after induction of surgical longitudinal wounds and examination of wound healing; (a) normal earthworm; (b) worms received Vaseline; (c) worm in the first day of injured showing hemorrhage (circle), and (d) worms received 5 mg, (e) worms received 10 mg, (f) worms received 15 mg. (Red (glandular epithelial cell layer), green (circular muscle layer) and yellow (longitudinal cell layer) Hematoxylin and eosin (H&E).