Figure 3.

(A) Oesophageal muscle coat. Ci: interstitial cell rich in mitochondria and smooth endoplasmic reticulum and with a well-developed Golgi apparatus at a nuclear pole. Arrows point to close contacts with neighboring interstitial cells and with a muscle cell (M). A basal lamina surrounds the cell almost entirely. ×9400. (B,C) Gastric muscle coat. An interstitial cell with thin filaments (f) at the cell periphery is shown in (B). The arrow points to a close contact with a muscle cell (M). ×11,400. An interstitial cell with few organelles near the nucleus and many filaments parallel to the cell major axis is shown in (C). Many pinocytotic vesicles are located along the plasma membrane. ×12,800.