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. 2017 Mar 20;14:5. doi: 10.1186/s12976-017-0053-x

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© The Author(s). 2017

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. 7 — OSI color maps for the AVF and contralateral non-surgery controls. The color bars are adjusted to emphasize the OSI distributions in the vein (a) and artery (b). Peak OSI in the AVF vein (black arrow heads) was approximately 0.4, while peak OSI in the inflow artery (red arrow head) was approximately 0.01