Fig. 4 DA response of ABTS solutions to blank and different thiolcontaining
compounds in the presence of GSH (30 mM). From left to
right are blank, mercaptoacetic acid (30 mM), mercaptoethanol (30 mM),
DTT (30 mM), Cys (30 mM), GSH (30 mM), respectively. Relative DA:
(DAtotal
DAGSH)/DAGSH.