Figure 4a. Meckel diverticulum. (a) Photomicrograph (original magnification, x16; hematoxylin-eosin [H-E] stain) shows the diverticulum composed of all layers of the intestinal wall. Normal small intestinal mucosa and a focus of gastric mucosa (arrow) line the diverticulum. (b) Photomicrograph (original magnification, x48; H-E stain) shows normal small intestinal mucosa with goblet cells along the luminal surface (arrow).