Malondialdehyde serum levels in animals after experimental Trypanosoma cruzi infection under treatments G3–G8 at the day of sacrifice (60 days post-infection). Each bar represents the mean pmol/mL value ± SD. Statistical differences (p < 0.05) among groups are shown with different characters above the bars. Groups G1 and G2 were not included because the mice died before day 30 post-infection.