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. 2015 Sep 17;22(1):75. doi: 10.1186/s12929-015-0183-6

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© Zhang 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. 1 — Relationship between uOC concentration and progression of CKD. uOC concentration decreased significantly with the progression of CKD (P < 0.01). This figure is a “box and whisker plot”. The center (box) represents the middle 50th percentile of the data set and is derived using the lower and upper quartile values. The median value (dark line) is displayed inside the box. The maximum and minimum values are displayed with vertical lines (whiskers) connecting the points to the center box