Freeze-Fracture Study of the Cell Junctions in the Utricle and Saccule

Abstract
The maculae sacculi and utriculi of the chinchilla vestibular labyrinth have been studied by freeze-fracture method. In the replicas extensive zonulae oc-cludentes have been found between sensory and supporting cells at the endolymphatic surface. Gap junctions are located between the supporting cells. Some intramem-branous specializations of the synoptic regions are described in both types of the sensory cells.