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. 2019 Oct 11;20:366. doi: 10.1186/s12882-019-1552-2

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© The Author(s). 2019

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 — Kidney biopsy showing destruction of arteries by epithelioid cell granulomas (Masson’s trichrome (a) and H&E staining (b)). (a-b) Light microscopy. (a) Juxtaglomerular (↘) and periarteriolar (*) non caseating granulomas. Glomeruli were unremarkable (Masson trichrome staining; original magnification, × 200). (b) Segmental necrotizing granulomatous arteritis (H&E staining; original magnification, × 400)