highly significantp ≤ 0.01
Compared with control result (1.07 μmol/min/mL), the activity of glutathione-S-transferase (GST) recorded 0.85, 0.85, 0.80 and 0.82 μmol/min/mL, respectively for MET, ABM, MET+ABM, and MET+ABM+Zn; indicating highly significant decreases ( p ≤ 0.01) in the activity of this enzyme.