Antrum CD8+/CD4+ of autoimmune gastritis (7.86 ± 7.23), calculated by dividing CD8+/CD3+ by CD4+/CD3+ in the greater curvature of the antrum, was also higher than that of active (1.49 ± 0.58) and inactive gastritis (2.84 ± 2.17). The gene discussed is CD8A; the disease is autoimmune gastritis.