Figure 7.

(a,b,c) Effect of Pb-exposure and calcium supplementation to Pb on ACh levels in cortex, cerebellum and hippocampus. Rats were exposed to either deionized drinking water (control) or Pb-acetate (0.2%) or calcium together with Pb in deionized water from gestational day 6 (GD 6) to GD 21 through drinking water. The neurotransmitter levels were determined in the synaptosomal fractions of brain regions. Values are mean ± SD of six separate experiments. The 0.05 level of probability was used as the criterion for significance.