5C0S:
reference: Hemagglutinin-stem nanoparticles generate heterosubtypic influenza protection., Yassine HM, Boyington JC, McTamney PM, Wei CJ, Kanekiyo M, Kong WP, Gallagher JR, Wang L, Zhang Y, Joyce MG, Lingwood D, Moin SM, Andersen H, Okuno Y, Rao SS, Harris AK, Kwong PD, Mascola JR, Nabel GJ, Graham BS, Nat Med. 2015 Aug 24. doi: 10.1038/nm.3927. PMID: 26301691

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