tight junction
http://purl.obolibrary.org/obo/GO_0070160
A cell-cell junction that seals cells together in an epithelium in a way that prevents even small molecules from leaking from one side of the sheet to the other. [ http://openisbn.com/search.php?q=0815332181&isbn=1/ ]
Synonyms: occluding junction, occluding cell junction