Identification of the layered morphology of the esophageal wall by optical coherence tomography

Figure 7 OCT image and corresponding histological sections of esophageal wall specimen injected with cyanoacrylate adhesive into the fifth layer. A: OCT image of esophageal wall specimen injected with cyanoacrylate adhesive into the fifth layer (less reflective layer). The large white arrow indicates the injection location for cyanoacrylate adhesive. B: Corresponding histological section. The cyanoacrylate adhesive is observed in the muscularis propria (HE, original magnification × 4). C: Corresponding histological section (EM, original magnification × 4). The white and black bars represent 1 mm.