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. 2014 Nov 20;12:103. doi: 10.1186/1477-7827-12-103

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© Alshahrani et al.; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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DNA damage in the different age groups of infertile men. Percentage of DNA damage assessed using the TUNEL method is shown on the Y-axis and age group on the X-axis. Significantly higher levels of DNA damage was seen in >40 y compared to the ≤30 y.