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Subchronic ozone exposure changes circulating stress hormones. Stress hormones were measured in plasma samples collected using EDTA as an anticoagulant in rats exposed to air or ozone (0.25 and 1.00 ppm) immediately after final exposure (13wk) and following a 1wk recovery. Stress hormones included (A) adrenaline, (B) noradrenaline and (C) corticosterone. Values indicate mean ± SEM (n = 8–10). *Indicates significant ozone effect when compared to matching air group (*p < 0.05).
