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Time courses of changes in serum NOx (A) and LPO (B) concentrations in rats with WIRS. Fasted rats were exposed to WIRS for 1.5, 3 or 6 h. Serum NOx and LPO were assayed at each time point after the onset of WIRS as described in Materials and Methods. Open bar, control rats without WIRS; closed bar, rats with WIRS. Each value is a mean ± SD (n = 5 for unstressed rats; n = 8 for stressed rats). *Significantly different from unstressed control rats, p<0.05.
