Fig. 2

Histological examination of surgical specimens of colon (captured by equipment of Olympus BX51 and acquisition software of Basler Pylon Device). a An increased density of myenteric nerve fibers, the presence of giant nerve plexuses, and a relatively scarcity of ganglion cells could be found. The proliferated nerve fibers and hyperplastic myenteric plexuses are indicated with a red arrow. The comparatively few ganglion cells in the myenteric plexus are indicated with black arrows (Hematoxylin and Eosin; original magnification, × 100). b NeuN staining shows the ganglion cells (black arrows) in the myenteric plexus