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. 2010 Oct 7;6(10):e1000949. doi: 10.1371/journal.pcbi.1000949

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Cai et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The viruses labeled with the cluster names HK68, EN72, VI75, TX77, BK79, SI87, BE89, BE92, WU95, SY97 and FU02 are defined by [8]. One unit (grid) corresponds to a two-fold change in HI assay.

Inline graphic — The viruses labeled with the cluster names HK68, EN72, VI75, TX77, BK79, SI87, BE89, BE92, WU95, SY97 and FU02 are defined by [8]. One unit (grid) corresponds to a two-fold change in HI assay.