100

30

20

10

0

40

30

20

10

0

*p < 0.05

*

* p < 0.005
*

*

* p < 0.001
*

*

Control rats

Aluminium
treated rats

Olfactory bulbCortex

Hippocampus

Striatum

Hypothalamus

Medulla
oblongata

Mid brain

Pons

Spinal cord

Cerebellum

Fig. 1:

Effect of aluminium chloride exposure for 450
days on AChE activity in rat brain regions.
Results are expressed as Mean ± S.D.