In addition, the protein levels of Nrf2 in human PDAC cells (Miapaca-2, Capan-2, PANC-1) and normal human gastric epithelial cells (GSE-1) and human fibroblast cells (Hs27) were detected using western blot, and it was found that Nrf2 protein levels in the cancer cells were significantly higher than those in the normal cells (Fig. 1c). The gene discussed is NFE2L2; the disease is cancer.