Fig. 1From: Antiproliferative effects of masitinib and imatinib against canine oral fibrosarcoma in vitro Immunohistochemistry of archived canine oral fibrosarcoma tumor biopsies. Representative photomicrographs of an archived canine oral fibrosarcoma tumor specimen (dog #4) stained with (a) hematoxylin and eosin, b PDGFR-α immunohistochemistry, c PDGFR-β immunohistochemistry, d Kit immunohistochemistry, e VEGFR-2 immunohistochemistry, and f rabbit negative control; 400×. Immunoreactivity for PDGFR-α (both cytoplasmic and nuclear locations) and PDGFR-β (predominantly cytoplasmic location) is visible. No staining is seen for VEGFR-2, Kit, or in the rabbit negative controlBack to article page