Definition for Paracellular transport
From Biology Forums Dictionary
Paracellular transport refers to the transfer of substances between cells of an epithelium. It is now well-recognized that paracellular transport is a major route for vectorial transport of solutes and water. The rate-limiting step in paracellular transport (the paracellular "barrier") is constituted by the tight junction, which is the most apical of the intercellular junctions.