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. 2022 May 18;12:8334. doi: 10.1038/s41598-022-12243-z

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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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Doppler parameters measured in proximal, middle and distal supratesticular zones in the supratesticular region along the testicular cord. (A) Peak systolic velocity (cm/s); (B) End diastolic velocity (cm/s); (C) Resistive index; (D) Pulsatility index; (E) Total arterial blood flow (ml/min) and (F) Total arterial blood flow rate (ml/min/100 g of testicular tissue). **p < 0.01 and ***p < 0.001 versus proximal zone; ^###p < .001 versus middle zone.