Figure 2. Statistical analysis of VEGFR-2 and PDGFR-β gene and protein expression in canine hemangiosarcoma (HSA). A positive correlation is observed between relative gene and protein expressions of VEGFR-2 (A) and PDGFR-β (B); (C) Absence of statistical difference when comparing VEGFR-2 transcripts with histopathological subtypes; (D) Strong association between histological subtypes and relative expression of PDGFR- β.