Model Description: An IRES-CreERT2 expression cassette was knocked into the Atp4b gene stop codon site. Besides,An IRES-CreERT2-WPRE-pA expression cassette were knock into the Atp4b gene start codon site to generate Atp4b-IRES-CreERT2(Stock No. NM-KI-210118) mice. ATP4B could serve as a tumor suppressor in the tumorigenesis and progression. This strain is useful in studying the function of gastric parietal cells in gastric epithelial homeostasis. When crossed with a strain carrying a gene flanked by loxP sites, the flanked gene will be removed in cre-expressing cells after tamoxifen treatment.