| HCoV | human coronavirus |
| RSV | respiratory syncytial virus |
| IFV | influenza virus |
| PBTZ | pyridobenzothiazolone |
| cmpd | compound |
| EC50 | 50% effective concentration |
| EC90 | 90% effective concentration |
| CC50 | Half-maximal cytotoxic concentration |
| SI | selectivity index |
| PFU | plaque-forming unit |
| PFU/mL | plaque-forming unit per mL |
| FFU | focus-forming unit |
| FFU/mL | focus-forming unit per mL |
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