“One-hour exposure of … 1 mg/ml GTP significantly increased the tolerance to oxidants (2 mM H2O2, 4 mM … pH solution (pH 4.0) containing various organic acids (60 mM citric , acetic, propionic or lactic acid) and other stress conditions (… % NaCl, 12 % ethanol and 150 μg/ml crystal violet).”