DOCK6 and gastric cancer: Real-time PCR studies and western blot studies were used to investigate the expression of Dock6 in normal gastric epithelial cells (GES-1) and GC cell lines (AGS, SGC-7901, HGC-27, MGC-803 and BGC-823), and Dock6 expression in GC cells was higher than that in GES-1 cells (Fig. 2a).