4NRL:
reference: The roles of hemagglutinin Phe-95 in receptor binding and pathogenicity of influenza B virus., Ni F, Nnadi Mbawuike I, Kondrashkina E, Wang Q, Virology. 2014 Feb;450-451:71-83. doi: 10.1016/j.virol.2013.11.038. Epub 2013 Dec, 22. PMID: 24503069

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