Frontiers Glutathione: A Samsonian life sustaining small molecule that protects against oxidative stress, ageing and damaging inflammation Simplify your Glutathione Measurements Arbor Assays Heinz bodies are small clumps of damaged hemoglobin found inside red blood cells. They form due to oxidative stress and are often seen in conditions like G6PD deficiency. Their presence can indicate Persistent red blood cells retain their ability to move in microcapillaries under high levels of oxidative stress Communications Biology