Table 1.

Mean (±SD) of blood lead level and brainstem of animals from control and experimental groups (n = 5/group).

Groups	[Lead] blood (μg/dL)	[Lead] brainstem (ng/g)
Control	0.19 ± 0.10	11.18 ± 4.42
100 mg/L Pb	10.56 ± 5.29a,b	27.21 ± 7.03
100 mg/L Pb + FeSO4	3.89 ± 2.04a	19.53 ± 9.41
400 mg/L Pb	48.39 ± 8.66a	259.88 ± 76.a
400 mg/L Pb + FeSO4	25.85 ± 3.61a	208.87 ± 91.10
FeSO4	0.13 ± 0.02	8.54 ± 1.34c

^aMean with significant difference when compared control with experimental groups.

^bMean with significant difference between the groups 100 mg/L Pb and 100 mg/L Pb + FeSO₄.

^cMean with significant difference between the groups FeSO₄, 400 mg/L Pb and 400 mg/L Pb + FeSO₄.