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. 2020 May 5;11:712. doi: 10.3389/fmicb.2020.00712

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Copyright © 2020 Wang, Wang, Ning, Shi and Tan.

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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Annotated Venn diagram analysis. Nr, NCBI non-redundant protein sequence database; Nt, NCBI nucleotide sequence database; KOG, euKaryotic Ortholog Groups database; Pfam, Protein family database; GO, Gene Ontology database.