Researchers isolated tiny particles called extracellular vesicles (EVs) from a medicinal mushroom called king oyster mushroom (Pleurotus eryngii). These EVs act like natural delivery packages containing beneficial compounds like antioxidants and anti-inflammatory molecules. The study found that EVs from mushroom mycelium (the root-like part) were purer and more potent than those from the mushroom cap, with strong abilities to neutralize harmful free radicals in the body.