Exposure to Cd and Cr increased lipid peroxidation in the liver.

Cd (A) induced a moderate amount of malondialdehyde (MDA) formation at the highest dose, and this amount was sustained through the duration of the study. Cr (B) induced MDA formation at all concentrations tested. At the low dose, MDA returned to control levels over time. However, at the medium and high doses of Cr, MDA levels were elevated for the duration of the experiment. Data are expressed as mean ±SE, n = 6–7 animals per group. *Significantly different from control on each day, p<0.05.