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Generation and clearance of reactive oxygen species in air pollution. CAT, catalase; Gclm, glutamate-cysteine ligase modifier subunit; GPx, glutathione peroxidase; GSH, glutathione; GSSG, glutathione disulfide; NO, nitric oxide; NOS, nitric oxide synthases; NOXs, NADPH oxidase; Nqo1, NAD(P)H dehydrogenase, quinone 1; Nrf2, nuclear factor erythroid 2-related factor 2; oxL, oxidized lipids; Prx1, peroxiredoxin-1; SOD, superoxide dismutase.
