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Anion selectivity sequence of the perfused bronchiole. The sequence of the bronchiole (upper data) roughly fits the known sequence of CTFR in other tissues (lower data taken from literature; cf. text)
| Airway Anion selectivity: | Cl- | ≈ | Br- | > | I- | > | NO3- | > | HCO3- | >> | Gluconate |
| Transepithelial TEP : | ~0 | -1.9 | -5.1 | -9.2 | -19.5 | -44.8 | |||||
| Estimated Px/PCl: | 1.0 | 0.92 | 0.79 | 0.65 | 0.33 | 0.28 | |||||
| CFTR anion selectivity: | NO3- | ≈ | Br- | ≈ | Cl- | > | I- | > | HCO3- | >> | Gluconate |
| Estimated Px/PCl: | 1.1 | 1.1 | 1.0 | 0.39 | 0.014 | ~0 | |||||
