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. 2019 Nov 20;240:108513. doi: 10.1016/j.vetmic.2019.108513

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© 2019 Elsevier B.V. All rights reserved.

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 — Neutralization and ELISA tests. The neutralization tests were conducted between PhCoV isolates I0623/17 and I0710/17 and between isolate I0623/17 and selected IBV strains (A). The calculated antigenic relatedness (r) value of PhCoV isolate I0623/17 against I0710/17 and selected IBV strains were shown. The neutralization titers of serum from the commercial pheasants tested by VN for PhCoV antibodies using I0623/17 virus (B). Sera ELISA antibody responses of chickens inoculated with PhCoV isolates I0623/17 and I0710/17 at different ages and pheasants inoculated with PhCoV isolate I0710/17 at 45 days of ages (C).