Table 2.

Expression pattern of ASIC and ENaC subunits in different cell and tissue types

	ENaC Subunit				ASIC Subunit
Tissue/Cell	α	β	γ	δ	1	2	3	4	Reference No.
Astrocytes			x	x	x	x	x	x	(40)
BeWo (trophoblast)	x	x	x						(96)
Bladder	x	x	x						(13, 357)
Brain	x	x	x		x	x	x		(6, 10, 215, 274, 307)
Chondrocytes, intervertebral discs	x	x			x		x		(203, 388, 389)
Dorsal root ganglia		x	x		x	x	x	x	(7, 104, 186)
Esophagus	x	x	x	x	x	x	x		(2, 17, 424)
Gastrointestinal tract	x	x	x		x	x	x		(64, 103, 117, 133)
Heart neurons						x	x		(167, 373)
Inner ear	x	x	x			x	x		(220, 221, 243, 303, 310)
Keratinocytes	x	x	x						(57)
Kidney	x	x	x						(28)
Lung, AT1/ ATII cells, bronchus, nasal epithelium, Calu-3 cells	x	x	x	x			x		(27, 116, 211, 212, 371)
Lymphocytes	x	x	x						(441)
Nodose ganglia	x	x	x		x	x			(258, 372, 423)
Osteoblasts	x				x	x	x		(223)
Pacinian corpuscles					x	x			(62)
Retina	x	x	x	x	x	x	x	x	(56, 149, 277)
Sperm	x			x					(173)
Taste buds	x	x	x		x	x	x		(231, 248, 250, 349)
Uterus, vagina, fallopian tube	x	x	x						(75, 116)
Vascular smooth muscle		x	x		x	x	x		(156, 205, 206)