Figure 2. Effects of anti-CD14 monoclonal antibody (A) and anti-Toll-like receptor 4 monoclonal antibody (B) on the binding of FITC-labeled LPS to human gingival fibroblasts. Human gingival fibroblasts were incubated with an unlabeled control antibody (CT), FITC-labeled LPS (LPS binding), or anti-CD14 monoclonal antibody with FITC-labeled LPS (LPS+anti-CD14 mAb) and anti-Toll-like receptor 4 monoclonal antibody with FITC-labeled LPS (LPS+anti-TLR4 mAb). The cells were analyzed by flow cytometry (Wang et al., 1998, 2000b).
