Table 3: Clinical observations, mortality rates, and day of death for male rats following 1-hour exposure to EO.

Exposure group (ppm)Clinical signsMortalityNumber found dead
Observation day
During exposureDuring two days of postexposure periodNumber dead/total0a12

6161 ppmAbsent startle reflex, gaspingUnkempt fur, decreased respiration rate, hypoactivity, ataxia, tremors4/50b31

5546 ppmAbsent startle reflexUnkempt fur, decreased respiration rate, hypoactivity, ataxia, tremors1/5001

4827 ppmAbsent startle reflexPerioral/perinasal encrustation0/5000

aDay 0 is exposure day. Days 1 and 2 are days following exposure day.
bNumber of animals found dead on a particular day.