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. 2018 Jun 25;14:204. doi: 10.1186/s12917-018-1504-2

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© The Author(s). 2018

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. 5 — Gross and histological lesions of tonsils, lungs and kidneys of piglets in different groups. Piglets infected with Shimen (a1-a3) or HLJ1 (b1-b3) showed obvious necrosis, hemorrhaging or hemorrhagic spots than mock-infected (c1-c3) piglets. Histopathology of tonsils, lungs and kidneys of Shimen- (a4-a6), HLJ1-infected (b4-b6) piglets manifested partial lymphoid follicle atrophy, interstitial pneumonia or lymph histiocytic infiltrates than control (c4-c6). Viral antigen of CSFV was detected in the tonsils of piglets in Shimen- or HLJ1-infected groups by means of IHC staining (a7, b7). The tonsils of piglets in control group were negative for CSFV (C7). Original magnification, × 200