Keywords: مشتقات دکستران; DM-RX; dextran derivatives bearing pendent N-alkyl-N,N-dimethyl-N-(2-hydroxypropyl)ammonium chloride groups; DM-MeImX; dextran derivatives bearing pendent1-(2-hydroxypropyl)-3-methyl imidazolium chloride groups; DM-C12-QRX; cationic dextran derivatives wi