| tight junction |
1. an intercellular junction at which adjacent plasma membranes are joined tightly together, separated by only 1 to 2 nm; these junctions variably occlude the intercellular space and limit or eliminate the intercellular passage of molecules. 2. zonula occludens.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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