Science, Maths & Technology
Histology, microscopy, anatomy and disease
...physical protection is needed to prevent infection, the epithelium is several layers thick, and is something like that of the skin. However, in most parts of the gut, the properties of the epithelium are rather different from those of the skin. Here the epithelium is only a single cell thick, with the apical membrane of these cells exposed to the lumen of the gut and the...