activeoxygen aminoacids analysis antioxidants aquaticbiodiversity aquaticecology biochemicalmarkers biochemistry biodiversity biotechnology catalysis cellcommunication cellinteraction cells cellularsignaltransduction chargeexchange chemistry clinicalmedicine congresses diseases electrondonor-acceptorcomplexes environmentalpollutants environmentaltoxicology enzymes evidence-basedmedicine fitness general health hydrolysis internalmedicine lifesciences medical metabolism methodology organiccompounds oxidants oxidation oxidation-reduction oxidativestress pathophysiology peptides physical physiological physiologicaleffect physiologicaloxidation physiology pollutants proteins protontransferreactions qu125 qu125r31852008 qu375h234r2008 research science signaltransduction stress(physiology) synthesis theoretical zoology