These data, usingour well-established technique for analyzing chemokine expression [24], [25],settles conflicting results between two previous studies, one that reported CXCL12 was over-expressed in human PDAC [35] and the other that showed that CXCL12 was absent in human PDAC tumor cells [36].Bothreports, however, were limited to malignant tissue and did not include the normal or benign tissue controls analyzed herein. The gene discussed is CXCL12; the disease is neoplasm.