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. 2021 Jan 26;12:628545. doi: 10.3389/fmicb.2021.628545

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Copyright © 2021 Huang, Wu, Wu, Liang, Zhuang, Ye, Qu, Liao and Jiao.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Phylogenetic analysis of PA. PA: nt 1–2,110. Black triangles indicate viruses characterized in this study; other viral sequences were downloaded from GenBank. EA, Eastern Asia, viruses came from China, Laos, Vietnam, Japan, Korea, and so on; H5, came from H5 subtype AIVs; H9/SH98, came from H9 subtype AIVs; SH, Shanghai. Virus like/lineages are shown at right.