1.1.3.44 analysis development of a coupled enzyme assays including 3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazoliumbromide and phenazine methosulfate, resulting in the production of 3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazoliumbromide formazan which can be monitored at 570 nm 719676