As expected, epithelial markers (Krt7, Krt8, Krt18, Krt19, Epcam, Egfr, Cdh1) were highly expressed in primary pancreatic tumors and in the cancer cell line NB508 and nearly absent in the nonepithelial MEFs and in normal WBCs (Figure S3). Here, EGFR is linked to pancreatic neoplasm.