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. 2023 Nov 23;13(1):2287682. doi: 10.1080/22221751.2023.2287682

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© 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group, on behalf of Shanghai Shangyixun Cultural Communication Co., Ltd

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent.

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Figure 6. — Survival rates of the chickens after lethal H5N1-D889 virus challenge. At 3 weeks after immunization, groups of immunized chickens were intranasally challenged with a high lethal dose (10^6.0 EID₅₀) of H5N1-D889 virus. Survival rates of chicken were measured daily for 14 days after challenge. PBS group (n = 5), vaccine group (n = 10).