Table 2.

Cell types expressing T2Rs

System	Tissue or cell type	Species	T2Rs expressed (T2Rx)a,b
Taste	Taste papillae	Human	1, 3, 4, 5, 7, 8, 9, 10, 13, 14, 16, 19, 20, 30, 31, 38, 39, 40, 41, 42, 43, 45, 46, 50, 60
	Taste papillae	Mouse	102, 103, 104, 105, 106, 107, 108, 109, 110, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 129, 130, 131, 134, 135, 136, 137, 138, 139, 140, 143, 144
Respiratory	Smooth muscle	Human	1, 3, 4, 5, 8, 9, 10, 13, 14, 19, 20, 30, 31, 42, 45, 46, 50
	Epithelial cells	Human	1, 3, 4, 7, 8, 9, 10, 13, 14, 16, 38, 43, 46
	Solitary chemosensory cells	Mouse	108, 119
Gastrointestinal	Stomach/duodenum	Rat	r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r12, r16, r34, r38
		Mouse	108, 134, 138
	Cecum/colon	Human	3, 4, 5, 9, 10, 13, 20, 30, 31, 38, 39, 40, 42, 43, 46, 50, 60
	Gastrointestinal cell lines
	NCI-H716 cells	Human	9, 38
	HuTu-80	Human	4, 5, 14, 16, 20, 30, 31, 38, 39, 40, 46, 50, 60
	STC-1 cells	Mouse	108, 134, 135, 137, 138, 144
	Ar42J	Rat	r16, r34, r38
Nervous	Brain neurons/glia	Rat	r107 (a.k.a. r10), r4, r38

^aT2R isoform numbers (x) are for the associated species.

^bSee Behrens and Meyerhof (10) for a review of T2R expression studies as well as a detailed discussion of T2R nomenclature.