During the course of study of the mucous membrane of the distal part of the mouse colon a
type of cell was identified which differs significantly from other cells present in the epithelium.
The cells occur both in the surface epithelium and in the epithelium of intestinal glands. They
are characterized by the presence of numerous vesicles and tubules situated in the
supranuclear region of the cell, by prominent microvilli having approximately twice the
dimensions of those of the adjacent epithelial cells and enveloping fibrillar elements which …