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. 2022 Jan 19;11(1):21–38. doi: 10.1007/s40120-021-00315-7

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, which permits any non-commercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by-nc/4.0/.

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Fig. 5 — A sural nerve biopsy specimen obtained from a patient with microscopic polyangiitis showing the attachment of neutrophils to endothelial cells in the epineurial vessel. Firm adhesion of neutrophils to endothelial cells is frequently observed in patients with anti-neutrophil cytoplasmic antibody-associated vasculitis. Uranyl acetate and lead citrate staining. Scale bar = 1 μm