| E2 | Estradiol |
| ER | Estrogen receptor |
| HER2 | Human epidermal growth factor receptor 2 |
| hnRNPK | Heterogeneous nuclear ribonucleoprotein |
| LI | Labeling index |
| SERM | Selective estrogen receptor modulator |
| siRNA | Small interfering RNA |
| PLA | Proximity ligation assay |
| PR | Progesterone receptor |
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