title: X-ray structure opolysaccharides.
mesh_terms: D002482:Cellulose; D002686:Chitin; D003461:Crystallography; D004952:Esters; D011134:Polysaccharides; D013431:Sulfates; D014961:X-Ray Diffraction
chemical_list: D004952:Esters; D011134:Polysaccharides; D013431:Sulfates; D002686:Chitin; D002482:Cellulose