Reactive oxygen species (ROS), byproducts of oxygen metabolism, are present in the cells as a consequence of living in an oxygen-rich atmosphere. ROS can be generated by both endogenous and exogenous sources, such as mitochondria and carcinogens, respectively. ROS contain superoxide (O2•−) and hydrogen peroxide (H2O2), and are important for the normal function of many cellular processes, including metabolism, cell growth and differentiation... See More
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