A single chain transmembrane glycoprotein that is selectively expressed on human lymphoid and myeloid hematopoietic progenitor cells and endothelial cells. It labels many gastrointestinal stromal tumors, dermatofibrosarcoma protuberans, solitary fibrous tumor and a subset of sarcomas, and has been used to measure angiogenesis.
A formalin-fixed, paraffin-embedded (FFPE) tissue block is preferred specimen typeorOne (1) unbaked, unstained slide for H&E staining (required) and two to three (2-3) positively charged unstained slides (all cut at 4-5 microns) for each test/antibody orderedBlock and slide identifiers should be clearly written and match exactly with the specimen ID and specimen labeling as noted on the requisition.
Use cold pack for transport. Make sure cold pack is not in direct contact with specimen.