Table 2.
Immunohistochemical and molecular subtype classification of the canine and human parental and RR cell lines.
| Cell line | Immunohistochemical classification | Molecular classification |
|---|---|---|
| MCF-7 | ER+/PR+/HER2− | Luminal A |
| MCF-7 RR | ER−/PR−/HER2− | Basal/HER2-overexpressing |
| ZR-751 | ER+/PR+/HER2− | Luminal A |
| ZR-751 RR | ER−/PR−/HER2− | Normal-like/HER2-overexpressing |
| MDA-MB-231 | ER−/PR−/HER2− | Basal |
| MDA-MB-231 RR | ER−/PR−/HER2− | Basal |
| REM-134 | ER−/PR−/HER2+ | HER2-overexpressing |
| REM-134 RR | ER−/PR−/HER2+ | HER2-overexpressing |