Effects of Porphyromonas gingivalis lipopolysacchar ide on collagen phagocytosis by human per iodontal ligament fibroblasts
FANG Chang- yun1, SU Zheng1, CHEN Lei1, FAN Ming- wen2, JIAN Xin- chun1, CHEN Zhi2
West China Journal of Stomatology . 2007, (04): 339 -341 .