1UZ6:
reference: Structure of an anti-Lewis X Fab fragment in complex with its Lewis X antigen., van Roon AM, Pannu NS, de Vrind JP, van der Marel GA, van Boom JH, Hokke CH, Deelder AM, Abrahams JP, Structure. 2004 Jul;12(7):1227-36. PMID: 15242599

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