2IXB:
reference: Bacterial glycosidases for the production of universal red blood cells., Liu QP, Sulzenbacher G, Yuan H, Bennett EP, Pietz G, Saunders K, Spence J, Nudelman E, Levery SB, White T, Neveu JM, Lane WS, Bourne Y, Olsson ML, Henrissat B, Clausen H, Nat Biotechnol. 2007 Apr;25(4):454-64. Epub 2007 Apr 1. PMID: 17401360

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