Figure 1. Representative immunohistochemistry scores for VEGFR-2 and PDGFR-β expression. (A) VEGFR-2 score of 4+ in a capillary histopathological subtype; (B) PDGFR-β expression in a capillary tumor with a score of 4+. Capillary HSA with a score of 3+ for VEGFR-2 (C) and PDGFR-β (D); (E) Solid HSA representing a score of 1+; (F) Solid HSA negative for PDGFR-β. Counterstain was performed with Harris Hematoxylin, 40x.
