How widespread is preparation for oxidative stress in the animal kingdom?

It is well known that many anoxia/hypoxia tolerant species when exposed to anoxia/hypoxia respond by increasing the activity/expression of antioxidant enzymes and/or glutathione levels—a phenomenon called “preparation for oxidative stress” (POS). This phenomenon was also observed during freezing exposure, severe dehydration, aerial exposure of water-breathing animals and estivation. However, as far as we know, there is no analysis available of...