However, recent results in dogs demonstrated a different cytokeratin (CK) and stem cell marker expression pattern profile in the two tumours: the basal cell markers p63 and CK14 were diffusely expressed in BCC, while TB tumours were strongly positive for CK8 and CD34, CK15 and CK19 [18]. The gene discussed is KRT19; the disease is skin basal cell carcinoma.