... groundunder liquid nitrogen, in the presence of PVP(0.5 g), then solubilized with 3 ml of phosphatebuffer (66 mWl, pH 7), and centrifuged(10 000 x g, 4°C, 10 min).tion ... iscurrently under investigation.The decreased peroxidase activity in theIWF after high 03 exposure could resultfrom either altered enzyme secretion ordirect enzyme denaturation ... of extra-cellular peroxidase between both experi-ments is probably due to different experi-mental conditions. In the previous paper(Castillo et al., 198 7), the experiment...