| VH | variable heavy chain domain |
| VL | variable light chain domain |
| VHH | the variable domain of heavy chain-only Ab |
| mAb | monoclonal antibody |
| BsAb | bispecific antibody |
| scFv | single-chain variable fragment |
| BiTE | bispecific T-cell engager |
| TRX | thioredoxin |
| NMR | nuclear magnetic resonance |
| HSQC | heteronuclear single quantum coherence |
| SVN | scytovirin |
| Fc | the Fc domain of Immunoglobulin G |
| GB1 | the B1 domain of IgG binding protein G |
| PTS | Protein trans-splicing |
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