Summary
Rats breathing 0.32 ppm HOCl gas for 5 hours a day over 25 days showed oxidative damage after the first day, then their antioxidant defences rose and every measure was back to normal a week after exposure ended. The authors call this a hormetic response.
Key points
- 0.32 ppm, 5 hours a day for 25 days, then 7 days recovery.
- Sharp lipid damage after day one; defences rose and peaked at day 7.
- All measures normal by day 32.
- Does not show long-term safety.