Additional file 1.

MAFFT multiple sequence alignment of pandemic strains (2009 - the top 7 sequences) HA proteins to HA (1918 - South Carolina) and WHO vaccine HA (the last 3 sequences).

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Su et al. BMC Bioinformatics 2013 14(Suppl 2):S21   doi:10.1186/1471-2105-14-S2-S21