Depletion of membrane cholesterol reduces binding of conformational antibody. The binding of mAb 11-5.2 (conformational antibody) to N-MΦs, mβ-MΦs, mβ-MΦ-CL, and mβ-MΦ-CL-AN was to assess cell surface expression of Ia.2 epitope (shaded box). The cells were stained with FITC-conjugated mAb 11-5.2. The binding of mAb 10-2.16 (nonconformational antibody) to N-MΦs, mβ-MΦs, mβ-MΦ-CL, and mβ-MΦ-CL-AN was to assess total cell surface expression of Ak (open box).The cells were stained with mAb 10-2.16 followed by FITC-conjugated goat anti-mouse IgG. The binding was expressed in terms of relative MFI with respect to N-MΦs. MFI of N-MΦs was considered as 100. ***P < 0.0005 with respect to N-MΦs.