Figure 7 A representative immunoblot of HT29 cell lysates after coculture with Helicobacter pylori, which had either been pretreated with ultraviolet (UV) irradiation for 2 min (thereby killing the bacteria, confirmed by viable count) or not pretreated with UV light. HT29 cells not treated with H pylori are shown for comparison. Intensity bands are decreased for “live” bacteria compared with UV‐treated H pylori. This suggests that the changes seen in levels of β‐catenin are due to a bacteria‐specific effect and that live bacteria are required for the effect.