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Schematic structures (a,b), dynamic light scattering (c,d), tracking analysis (e,f), and atomic force microscopy (g–i) of particles from hexanoyl-chitosan formed by tri-poly-phosphate linking (a,c,e,g) or from succinoyl-chitosan prepared by Ca2+ coacervation method (b,d,f,h). Data on NTA are shown as histograms of inserts.
