GST-PFO labeling of NPC cells colocalizes with LBPA. NPC (A-B”) and healthy control fibroblasts (C-C”) were fixed, permeabilized with 0.05% Triton X-100 (A-A”) or 0.05% digitonin (B-C”) and labeled with GST-PFO and anti-LBPA antibody. (A, B, C) GST-PFO labeling, (A’, B’, C’) LBPA localization, (A”, B”, C”) merged images. TX, Triton X-100, DiT, digitonin. Scale bar, 20 μm.