Table 2.
Normalized expression levels of ENaC subunits in human respiratory epithelium (trachea, bronchi, and lung)
| α ENaC | β ENaC | γ ENaC | δ ENaC | |
|---|---|---|---|---|
| Trachea | 133 | 3.3 | 4.2 | 2.9 |
| Bronchial epithelial cells | 104.8 | 3.9 | 4.9 | 3.4 |
| Fetal lung | 33.9 | 3.6 | 4.1 | 2.9 |
| Adult lung | 257 | 150 | 5.6 | 3.8 |
| Kidney | 184.8 | 9.9 | 4.3 | 2.8 |
| Fetal thyroid | 56.4 | 3.9 | 4.9 | 3.3 |
| Adult thyroid | 170.4 | 4.9 | 6.5 | 4.3 |
The kidney and the thyroid are controls of epithelial and nonepithelial tissues, respectively. Data are adapted from BioGPS with permission (http://biogps.org/#goto=welcome).