NDUFC1 and gastric cancer: We also used qPCR to detect the background expression of NDUFC1 in human normal gastric mucosal cell GES1 and both human gastric cancer cell lines MGC-803 and SGC-7901, showing that the mRNA levels of NDUFC1 in gastric cancer cell lines were higher than that of NDUFC1 in GES1 cells (Figure 1C).