IFNB1 and gastric cancer: Furthermore, to verify whether the number of the stem cells affected the intensity of anticancer effect in gastric cancer cells, AGS (4.0×103 cells/well) were treated with 5-FC after co-culturing with different amounts of HB1.F3, HB1.F3.CD and HB1.F3.CD.IFN-β cells (8.0×103, 1.6×104 and 2.4×104 cells/well) (Fig. 6).