3NN9: Refined Atomic Structures Of N9 Subtype Influenza Virus Neur And Escape Mutants
reference: Refined atomic structures of N9 subtype influenza virus neuraminidase and escape mutants., Tulip WR, Varghese JN, Baker AT, van Donkelaar A, Laver WG, Webster RG, Colman PM, J Mol Biol 1991 Sep 20;221(2):487-97. PMID: 1920429

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