Table 8

Effect of chronic exposure to two types of gasoline vapour on the duration of aggressive behaviour in male rats.

Parameter

Duration of aggression/sec

GROUP

Tooth chattering

Threat posture

Leaping and biting

Boxing position

Control

0.9 ± 0.23

1.5 ± 0.54

1.9 ± 0.72

1 ± 0.42

Leaded gasoline

4.7 ± 1.1 a**

6 ± 1.2 a*

5.5 ± 1.45

2.2 ± 0.63

Unleaded gasoline

4.4 ± 0.92 a*

6.2 ± 1.31 a*

5.9 ± 1.50

2.2 ± 0.74

Values are expressed as means ± SE

a: significantly different from the control group.

Asterisks indicate the level of significance (* P < 0.05; ** P 0.01.)

The number of animals was five pairs per ten days.

Kinawy BMC Physiology 2009 9:21   doi:10.1186/1472-6793-9-21