Frontiers Drug transport by red blood cells Glucose 6 phosphate Dehydrogenase (G6PD) Deficiency Concise Medical Knowledge 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 Glutathione Antioxidant : The Powerhouse Molecule that Fights Aging Skin Lightening NYC Persistent red blood cells retain their ability to move in microcapillaries under high levels of oxidative stress Communications Biology