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Effect of mutations P74S, H110R, A127T, F143Y, K153D, S188K, S223(N,I), S234P, G272S, N275S from Table 2) on IS of HA1 from human H5N1 virus A/Egypt/N04434/2010. (a) IS of the unmutated HA1 protein, (b) IS of HA1 with mutations.
