The SOD-like activities of SOD, four Cu(Ⅱ)Complexes, SOD-and Cu(Ⅱ)com-plex-liposomes were determined respectively by using cytochrome C method. The results showed that all of these systems had SOD-like activities to some extent of which the Cu(His)_2-liposome displayed the highest activity and the Cu(Ⅱ)complexes and liposomes had some positive cooperative action.
