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. 2022 Feb 16;12:2637. doi: 10.1038/s41598-022-06700-y

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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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Schematic representation of enzyme and fatty acid localization in epididymal cells. ELOVL2: elongase 2; ELOVL5: elongase 5; FADS1: Δ5-desaturase; FADS2: Δ6-desaturase; DHA: docosahexaenoic acid; EPA: eicosapentaenoic acid; ARA: arachidonic acid. In the connective tissue of cauda epididymis all enzymes were expressed (FADS1 and 2, ELOVL2 and 5), while in the basal cell only FADS1 and ELOV2 were found and in the principal cell ELOVL5, 2 and FADS1. Conversely the FAs localization was similar (ARA, DHA and EPA in both cells). Furthermore, in the epididymal vesicles, the expression of ELOVL5,2 and FADS 1 was found.