Immunohistochemical staining of paraffin-embedded human gastric carcinoma using anti-KIT mouse monoclonal antibody. HIER pretreatment was done with 1mM EDTA in 10mM Tris buffer (pH8.0) at 120°C for 2.5 minutes. UM800108 was diluted 1:400 and detection was done with HRP secondary and DAB chromogen. Cytoplasmic and mebraneous positive stain seen in very few tumor cells.