Table 2

The concentrations (mmol/litre) of some serum constituents needed for 50% antioxidative activity

SubstancesEC50 (mmol/l)
Uric acid0.005
Albumin0.1
Sodium pyruvate0.2
Glutathione reduced1.0
Arginine2.5
Tryptophan2.5
Cysteine5.0