Oxidative damage of periodontal tissue in the rat periodontitis model: Effects of a high-cholesterol diet - Tomofuji, Takaaki; Azuma, Tetsuji; Kusano, Hiroki; Sanbe, Toshihiro; Ekuni, Daisuke; Tamaki, Naofumi; Yamamoto, Tatsuo; Watanabe, Tatsuo (FEBS Letters, 2006)