File:Cellular<unk> .svg<unk> s, or zonula occludens, are the closely associated areas of two cells whose membranes join together forming a virtual impermeable barrier to fluid. It is a type of junctional complex only present in vertebrates. The corresponding junctions that occur in invertebrates are septate junctions.
Tight junction
Gap junction
Basolateral membrane
Adherens junction
Hemidesmosome
Apical membrane
Intermediate filament
T-tubule