| Primary antibody | Clone | Staining | Dilution/Manufacturer |
| ER | 1D5 | Nuclear | 1:2000; DAKO |
| PR | PgR636 | Nuclear | 1:2000; DAKO |
| Her2 | 6B11 | Membrane | 1:300; Cell Marque |
| Ki67 | MIB1 | Nuclear | 1:600; DAKO |