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. 2012 Oct 16;435(2):372–384. doi: 10.1016/j.virol.2012.09.013

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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. 4 — (A) Lymph node weight (LNW) to body weight (BW) ratios showed pronounced lymphadenopathy in all infected animals (Groups 2–4) as compared to control animals (Group 1)(P=0.02 or higher significance), but no statistical significance between PRRSV infected swine. (B) Thymus weight (TW) to BW ratios showed thymic atrophy in all infected animals (Groups 2–4) as compared to control animals (P<0.0001), and statistically significant differences between HP-PRRSV inoculated (P<0.0001) and naturally infected (P=0.0003) animals compared to VR-2332 inoculated swine.