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mRNA expression of various receptor tyrosine kinases in normal and tumor tissue samples from a dog with metastatic urethral transitional cell carcinoma. VEGFR was overexpressed in tumor compared to normal tissues. GAPDH was used for normalization. VEGFR, vascular endothelial growth factor receptor; PDGFR, platelet-derived growth factor receptors; ALK, anaplastic lymphoma kinase; EGFR, epidermal growth factor receptor.
