Stromal-derived factor-1'alfa'(CXCL12) levels increase in periodontal disease - Havens, Aaron M.; Chiu, Evonne; Taba Júnior, Mário; Wang, Jincheng; Shiozawa, Yusuke; Jung, Younghun; Taichman, L. Susan; D'Silva, Nisha J.; Gopalakrishnan, R.; Wang, Cun Yu; Giannobile, William V.; Taichman, Russell S. (Journal of Periodontology, 2008)