Open, Sesame

Ilustration showing paracellular transport

Long Description: Illustration of paracellular transport, showing glycan molecules jutting out from cell surfaces and direction of transport of molecules downward between 2 adjacent epitheilial cells.

Paracellular transport, in which molecules pass between epithelial cells, appears to be gated by a "sugar code."

The code is specified by glycan molecules that coat the top, or apical, surface of these cells.

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