Distribution of H.pylori antigens in gastric mucosa and its significance.

Objective: To investigate the distribution of H.pylori antigens in the gastric mucosa in patients with H.pylori infection, and the relationship between the distribution and gastric cancer.

Detection of H.pylori DNA in gastric epithelial cells by in situ hybridization.

Aim: To investigate the presence of H.pylori DNA within gastric epithelial cells in patients with H.pylori infection and its possible carcinogenic mechanism.