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Blood and brain lead (Pb) levels in male and female Long Evans, Fischer 344 and Sprague Dawley rats. Rats received Pb exposure over different developmental periods (perinatal or postnatal) and received different levels of exposure (0 ppm = control animals/no Pb exposure; 250 or 750 ppm Pb acetate incorporated into chow). Blood and brain (cerebellum) samples were taken for analysis at time of euthanasia (postnatal day 55). *p < 0.05; **p < 0.01; ****p < 0.0001.
