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Schematic illustration of (a) chitin samples used in this study and (b) cross-sectional crystal structure of native, dihydrate, and EDA complex of α- and β-chitin. Dotted rectangles represent the unit cell of the crystal structure of native, dihydrate, and EDA complex of α- and β-chitin.15,41,42,52,53 Orange bars and gray shadows represent the cross-section of chitin molecules and molecular sheets, respectively.
