Canine Mammary Tumors as a Potential Model for Human Breast Cancer in Comparative Oncology

Figure 1

Representative images of CMT subtypes by IHC. ERα and PR protein expression was measured according to the percentage of cells with nuclear positivity. HER2 protein expression was quantified based on the percentage of cells with uniform intense complete membrane staining. The labeled images indicate subtypes of canine mammary tumors, including luminal A, luminal B triple-negative, and HER2-enriched. Scale bars are equal to 100 µm.