Researchers extracted and studied polysaccharides from Trametes lactinea mushroom mycelium grown in liquid culture. They found that these polysaccharides have strong antioxidant properties and can boost immune cell function, with the intracellular polysaccharide IP-3 showing the most promising results. These findings suggest that polysaccharides from mushroom fermentation could have potential health benefits and could be developed into medicinal supplements.