| BTLA | B- and T-lymphocyte attenuator |
| CTLA-4 | Cytotoxic T-lymphocyte antigen-4 |
| ELISA | Enzyme-linked immunosorbent assay |
| HVEM | Herpes virus entry mediator |
| PBS | Phosphate buffer saline |
| PD-1 | Programmed cell death 1 |
| PDB | Protein data bank |
| PD-L1 | Programmed cell death-ligand 1 |
| PPIS | Protein-protein interactions |
| SPPS | Solid-phage peptide synthesis |
| SPR | Surface plasmon resonance |
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