Table 1.

The morphological classification of epithelial cells in the intermediate portion of the endolymphatic sac of several species

Species	Cell types	References
Guniea pig	Light cell, dark cell	[2]
	Cytoorganelle-rich cell (type 1) filament-rich cell (type 2)	[7]
Mouse	Light cell, dark cell	[13]
	Cytoorganelle-rich cell (type 1) filament-rich cell (type 2)	[9]
Rat	Light cell, dark cell	[14]
	Mitochondria-rich cell, ribosome-rich cell	[8]
Human	Two types of cells: (1) cells with numerous microvilli and Basal infoldings (2) cells with few microvilli and packed	[15]