| ASL | Airway surface liquid |
| Ca2+ | Calcium |
| CaM | Calmodulin |
| Cl− | Chloride |
| COPD | Chronic obstructive pulmonary disease |
| CBF | Cilia beating frequency |
| KCa | Ca2+-activated K+ channels |
| CF | Cystic fibrosis |
| CFTR | Cystic fibrosis transmembrane conductance regulator |
| KCa3.1 | Intermediate-conductance Ca2+-activated K+ channels |
| BK | Large-conductance Ca+2-activated K+ channels |
| MCC | Mucociliary clearance |
| ORNs | Olfactory receptor neurons |
| K+ | Potassium |
| KCa2 | Small-conductance Ca2+-activated K+ channels |
| Na+ | Sodium |
| TMs | Transmembrane helices |
| WT | Wild type |
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