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. 2023 May 11;14:1186869. doi: 10.3389/fmicb.2023.1186869

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Copyright © 2023 Meng, Li, Feng, Guo, Feng, Zhu, Chen and Zhang.

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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In vivo replication ability of the two H3N2 and one H3N6 CIVs. Replication ability in 4-week-old mice. Mice were euthanized on day 3 p.i., and their nasal turbinates and lungs were collected and titrated for virus infectivity in eggs.