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. 2019 Feb 13;530:89–98. doi: 10.1016/j.virol.2019.01.030

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© 2019 Elsevier Inc.

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Fig. 6 — Histopathology of porcine reproductive and respiratory syndrome virus KU-N1202-infected pigs that were euthanized at 7 days post-infection. Lung and tracheobronchial lymph node in the challenged pig (A and D), contact pig (B and E), and control pig (C and F), respectively. x100, H&E staining.