Figure 2. Increase in the lung myeloperoxidase (MPO) activity following haemorrhage is significantly reduced by stress preconditioning with heat.

MPO activity (mean ± s.e.m.) is shown for control (n = 4) and haemorrhaged rats (n = 4) that were or were not stress preconditioned with heat (42 °C for 20 min, 16 h before haemorrhage). *P < 0.05 from control rats; **P < 0.05 from haemorrhaged and resuscitated rats that were not stress preconditioned with heat.