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. 2015 Sep 7;8:420. doi: 10.1186/s13104-015-1407-2

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© Romanazzi et al. 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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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Fig. 2 — Correlation between the two DNA extraction time point batches. Each data point refers to the mean value of the DNA concentration of the four types of samples collected during one sampling day. In the small graph the slope value corresponds to the preserved amount of DNA from both of the extraction time points. In the extended graph black line and dots represent the DNA yields in fresh samples, grey line and dots represent the DNA yields in 10-days frozen samples, finally the dashed line represents the DNA concentration tendency with the applied correction factor