Oxidative stress is increasingly implicated as a possible underlying pathogenic mechanism in a wide range of diseases such as asthma, atherosclerosis, cardiovascular disease, diabetes, cancer, and Alzheimer’s disease. It results from an imbalance between the production of reactive oxygen species (ROS) and the system's ability to detoxify the reactive intermediates or repair the resulting damage. ELS offers multiple kits and reagents (e.g., antibodies, proteins, spin labels) to study ROS, heme oxygenase, glutathione, superoxide dismutase, oxy fatty acids, and other oxidative stress molecules.