title: Helicobacter pylori and gastric atrophy--cancer paradoxes.
mesh_terms: D017209:Apoptosis; D004249:DNA Damage; D005757:Gastritis, Atrophic / Q000150:complications / Q000382:microbiology* / Q000473:pathology; D016481:Helicobacter Infections / Q000150:complications* / Q000382:microbiology / Q000473:pathology; D016480:Helicobacter pylori / Q000472:pathogenicity*; D006801:Humans; D013274:Stomach Neoplasms / Q000209:etiology* / Q000473:pathology