Fig. 2
From: Antiproliferative effects of masitinib and imatinib against canine oral fibrosarcoma in vitro
Semi-quantitative assessment of immunoreactivity via image threshold-processing. Representative photomicrograph of PDGFR-β immunohistochemical staining of an archived canine oral fibrosarcoma tumor specimen (dog #6) before (a) and after (b) threshold-processing for semi-quantitative assessment of immunoreactivity; 400×. Red pixels are reported as percentage of total image pixels to provide a semi-quantified measure of immunoreactivity