FIG. 6.
Changes in proliferative markers after bacterial colonization. (A) Flow cytometry was used to analyze the changes in cells expressing the EGF receptor (epithelial cell population). The number of EGF receptor-positive cells increased in mice inoculated with H. pylori (hatched bars) or A. lwoffii (closed bars) compared to control animals (open bars). ∗, P < 0.05 compared to controls; n = 7 mice. (B) Representative slides of stomach sections stained with the proliferation marker Ki67 from control (a) and H. pylori (HP)- and A. lwoffii (AC)-inoculated mice infected for 4 months. Arrow indicates BrdU-labeled cells.