Reactive O2 species molecules involve peroxide (H2O2) and superoxide anions (O2 with unpaired electron) these molecules are extremely poisonous towards the mobile. The toxicity might be explained by the inclination of those molecules to bind or ruin vital biomolecules. Also, they evaluated the immunohistochemical expression of GSH on pre-cure biopsies, https://tornadosocial.com/story4233141/indicators-on-glutathione-injection-you-should-know