Purification, Characterization, Antioxidation, and Antiaging Properties of Exopolysaccharides and Endopolysaccharides of the Royal Sun Medicinal Mushroom, Agaricus brasiliensis (Agaricomycetes). Zhang J, Gao Z, Li S, Gao S, Ren Z, Jing H, Jia L. Int J Med Mushrooms. 2016;18(12):1071-1081. doi: 10.1615/IntJMedMushrooms.v18.i12.20.