Adenocarcinoma 1 Antibacterial agents 1 Bacterial diseases 1 Biochemistry and Physiology of Microorganisms, (New March 2000) 1 Clinical aspects 1 Drug resistance 1 Drug therapy 1 Epidemiology 1 Genetic factors 1 Genetics and Molecular Biology of Microorganisms, (New March 2000) 1 Genomics 1 Helicobacter Infections 1 Helicobacter pylori 1 Helicobacter pylori infections 1 Host Resistance and Immunity 1 Human Genetics and Molecular Medicine, (New June 2002) 1 Human Immunology and Allergology, (New March 2000) 1 Human diseases 1 Immune system 1 Immunity 1 Immunization 1 Lipopolysaccharides 1 Man 1 Molecular Biology and Molecular Genetics, (Discontinued March 2000, Reinstated and Revised June 2002) 1 Neoplasms 1 Pathogenesis 1 Pesticide and Drug Resistance 1 Pesticides and Drugs; Control, (New March 2000) 1 Prion, Viral, Bacterial and Fungal Pathogens of Humans, (New March 2000) 1 Stomach 1