Selenium as an Antioxidant: Roles and Clinical Applications in Critically Ill and Trauma Patients: A Narrative Review Glutathione is such a critical soldier in our line of defense that our bodies make it themselves. We even have mechanisms that recycle and reuse it. But what happens when our toxic Glutathione: Benefits and Supplements Frontiers Selenium Supplementation and Crop Plant Tolerance to Metal Metalloid Toxicity