| 4-HT | 4-Hydroxytamoxifen |
| BC | Breast cancer |
| ER | Estrogen receptor |
| FBS | Fetal bovine serum |
| HER2-E | HER2-enriched |
| HR | Hormone receptor |
| IHC | Immunohistochemistry |
| PLN | Positive lymph node |
| PMA | Phorbol 12-myristate 13-acetate |
| PR | Progesterone receptor |
| TAM | Tumor-associated macrophage |
| TME | Tumor microenvironment |
| TNBC | Triple-negative breast cancer |