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(A) Molecular structure of cellulose with structural cellobiose repeating unit indicated by brackets with C1 carbon indicated with blue shading and C4 carbon indicated with yellow shading. (B) Molecular structures of Cellulose Iα, Iβ, II, and IIII. Hydrogen atoms have been omitted from view for clarity. Crystallites were generated using Cellulose-Builder and visualized using PyMol.20,21
