2YP3:
reference: Evolution of the receptor binding properties of the influenza A(H3N2) hemagglutinin., Lin YP, Xiong X, Wharton SA, Martin SR, Coombs PJ, Vachieri SG, Christodoulou E, Walker PA, Liu J, Skehel JJ, Gamblin SJ, Hay AJ, Daniels RS, McCauley JW, Proc Natl Acad Sci U S A. 2012 Dec 26;109(52):21474-9. doi:, 10.1073/pnas.1218841110. Epub 2012 Dec 10. PMID: 23236176

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