Tumours were also completely negative for the epithelial marker EpCAM (Figure 4H), but scattered cells within the 129/Sv subcutaneous tumours (Figure 4I), as well as rare cells in angiosarcomas in SCID/beige mice (Figure 4J), reacted with a pan-CYTOKERATIN antibody, another epithelial marker. Here, EPCAM is linked to angiosarcoma.