Figure 1 shows both Hematoxylin-Eosin and BerEP4 staining of BCC. In Figure 1(a) we found that the lesions are randomly spread in the interfollicular layer and intermittently along the basal layer of the epidermis.  Figure 1(b) shows that even very small microlesions containing only 4 to 15 BCC cells are visualized clearly and easy to find with BerEP4 staining. Here, EPCAM is linked to skin basal cell carcinoma.