Fuente: WIPO "olive oil" A method of preparing a composition for treating cancer can include collecting epidermal gel secretions of catfish, extracting the total lipid fraction from the freeze-dried epidermal gel secretions to provide a total lipid fraction including neutral lipids, glycolipids, and phospholipids. A neutral lipid fraction, a glycolipid fraction, and a phospholipid fraction can then be separated from the total lipid fraction. Each of the total lipid fraction, the neutral lipid fraction, the glycolipid fraction, and the phospholipid fraction can exhibit anti-inflammatory and/or anti-cancer activities.