Helicobacter pylori (H.pylori), one of the most common infections, is associated with various clinical outcomes. In addition to inducing inflammation, immunological clearance of the pathogen is often incomplete. Regulatory T cells (Treg cells) have been recently demonstrated to play an important role in H.pylori infection and the final clinical outcome. The aim of this study was to investigate the number and localization of CD4+Foxp3+ Treg cells in stomachs and spleens of H.pylori‐infected mice. The expression levels of Foxp3 as well as anti‐...