| abstract |
A cationic graft-copolymer for a drug delivery system comprising a unit derived from a having a hydroxyl groups, namely, a cationic polysaccharide of the following formula (1) (C 6 H 7 O 2 (OH) 3-a (OX) a ) x H 2 O (1) and a unit derived from a polymerizable olefin compound of the following formula (2) (a, x, X, R 4 , R 5 , R 6 , and R 7 are defined in claim 1 - 8 ); a process for preparing the same and a transfection reagent made therefrom. |