| BALF | Bronchoalveolar lavage fluid |
| COPD | Chronic obstructive pulmonary disease |
| IAV | Influenza A virus |
| IFN | Interferon |
| LRT | Lower respiratory tract |
| TLR7 | Toll-like receptor 7 |
| TLR7ko | Toll-like receptor 7 knockout |
| PBS | Phosphate-buffered saline |
| PFU | Plaque-forming units |
| RSV | Respiratory syncytial virus |
| WT | Wild type |
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