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Antioxidant enzyme activity in blood or plasma of uninfected dogs and L. infantum infected dogs. CAT (a), SOD in blood (b) GSH-Px in plasma (c) and GSHPx in blood activity in symptomatic (SD) and asymptomatic (AD) dogs compared to uninfected control dogs (c). Significant differences (P < 0.05) from control are represented by*.
