abstract |
Cationic betaine precursors to zwitterionic betaines having controlled biological properties are provided. The present invention provides a cationic polymer that is hydrolyzable to a zwitterionic polymer, a monomer for making the cationic polymer, a surface comprising the polymer, a therapeutic agent delivery system comprising the cationic polymer, Methods of administering therapeutic agents using the delivery system and methods for making and using the cationic polymer, monomer, surface and therapeutic agent delivery systems are provided. [Selection] Figure 7 |