Blood samples were collected after decapitation in a vacutainer tube containing EDTA as an anticoagulant for the assay of pro-oxidative markers in the plasma and antioxidant markers in the lysate. The samples were centrifuged at 3000 rpm for 10 min at 4 °C using a Centurion centrifuge (K280R, UK). The plasma and erythrocyte lysate were then stored at -20 °C until analysis. All measurements were performed spectrophotometrically (Shimadzu UV-1800, Japan).
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