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. 2018 Jun 10;8(8):847–859. doi: 10.1177/2192568218779988

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© The Author(s) 2018

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 License (http://www.creativecommons.org/licenses/by-nc-nd/4.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 1. — Diagram showing the intervertebral disc segments used for gross morphological and biochemical analysis. AF1 is the site of intervertebral disc injury. NP1 is the region of NP on the injured half of the intervertebral disc. NP2 the complementary half of NP1. AF, annulus fibrosus; NP, nucleus pulposus.