Could near focus endoscopy, narrow-band imaging, and acetic acid improve the visualization of microscopic features of stomach mucosa?

Figure 2 Near focus mode from the point of view of the first observer. A: Near focus (NF)-a pattern shows a clear appearance of the regular arrangement of collecting venules (white arrow), subepithelial capillary network (SECN) (black arrow), and gastric pits (GP) (square); B: NF-b pattern shows a less clear appearance of the regular arrangement of collecting venules (white arrow) and a clear appearance of the SECN (black arrow) and GP (square); C: NF-c pattern shows a clear appearance of the SECN (black arrow) and GP (square).