Light micrograph of the myenteric plexus, a network of nerve cells within the walls of gastrointestinal organs that help create the so-called peristaltic movements which move food through the digestive organs. The pale blue diagonal structure is the plexus, which is present among pink smooth muscle cells on either side of the image. Haematoxylin and eosin stained tissue section. Magnification: 100x when printed at 10 cm.