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. 2021 Nov 3;10(1):2030–2041. doi: 10.1080/22221751.2021.1996209

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© 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

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.

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Figure 5. — Viruses were transmitted to contact chickens. The parental A(H7N9) virus HK1772 is shown in orange. The parental A(H9N2) viruses :YU335 (a), and BJ16 (b) are shown in red and cyan, respectively. HA(4), NA(6), PB2(1), PB1(2), PA(3), NP(5), M(7), and NS(8) of individual plaques are shown. # represents the number of plaques with the same genotype. In the pie charts, N indicates the total number of plaques. The mean ± SD percent of genotype frequency is shown. New genotypes are shown in different shades of grey.