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(A) Fourier-transform infrared spectra and (B) hydrogen-1 nuclear magnetic resonance spectra of glycogen and its derivatives: glycogen (a), DMAPA-Glyp-0.6 (b), and AEPZ-Glyp-0.35 (c).
Abbreviations: DMAPA, 3-(dimethylamino)-1-propylamine; AEPZ, 1-(2-aminoethyl) piperazine; Glyp, glycogen.
