E-cells are polyhedral and are stratified at the extreme distal end of the blind tube. These cells have demonstrated a high nuclear and cytoplasmic ratio. Their spherical to elipsoidal nucleus, approximately 6 mm in diameter, contains a single large or rarely two nucleoli. The cytoplasm is characterised by elongated mitocondria with few cristae, relatively sparse rough endoplasmic reticulum and occasional paranuclear golgi bodies.