... FEBS 1727 In order to further investigate the feasibility of theproposed method in biological systems, determination of O2–Æ in cell extracts was performed. The fluorescenceintensity of cell ... An21 College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan China2 College of Life Science, Shandong Normal University, Jinan, ChinaReactive oxygen ... real-time monit-oring of O2–Æ under physiological conditions is of increasing importance.To date, methods to detect of O2–Æ include ESR [7],superoxide dismutase (SOD)-inhibitable Nitro...