| CA19-9 | Carbohydrate Antigen 19-9 |
| CI | confidence interval |
| CSCs | Cancer stem cells |
| CTLA-4 | cytotoxic T-lymphocyte-associated antigen 4 |
| DAPI | 4′,6-diamidino-2-phenylindole |
| DFS | disease-free survival |
| FFPE | formalin-fixed paraffin- embedded |
| H&E | Hematoxylin and eosin |
| HR | hazard ratio |
| IF | immunofluorescence |
| IHC | immunohistochemistry |
| MDSC | myeloid derived suppressor cells |
| NSCLC | non-small cell lung cancer |
| OS | overall survival |
| PC | pancreatic cancer |
| PD-1 | programmed death 1 |
| PD-L1 | programmed death receptor ligand-1 |
| PFS | progression-free survival |
| TILs | tumor- infiltrating lymphocytes |
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