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. 2020 Jan 9;10:2966. doi: 10.3389/fimmu.2019.02966

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Copyright © 2020 Valero-Pacheco, Blight, Aldapa-Vega, Kemlo, Pérez-Toledo, Wong-Baeza, Kurioka, Perez-Shibayama, Gil-Cruz, Sánchez-Torres, Pastelin-Palacios, Isibasi, Reyes-Sandoval, Klenerman and López-Macías.

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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The amino acid sequence of R2 is present in Escherichia coli and Klebsiella sp. porins. Fast minimum evolution tree between the R2 sequence and the Non-Redundant (nr) GenBank database calculated by BLASTp.