title: Gastric defense mechanisms.
mesh_terms: D000818:Animals; D004285:Dogs; D004386:Duodenum / Q000276:immunology; D005750:Gastric Juice / Q000378:metabolism; D005753:Gastric Mucosa / Q000503:physiopathology; D005768:Gastrointestinal Hormones / Q000502:physiology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007583:Jejunum / Q000276:immunology; D046911:Macromolecular Substances; D008938:Mitosis; D009093:Mucus / Q000032:analysis / Q000201:enzymology / Q000502:physiology; D010437:Peptic Ulcer / Q000276:immunology / Q000503:physiopathology; D013270:Stomach / Q000276:immunology*; D013276:Stomach Ulcer / Q000503:physiopathology; D013312:Stress, Physiological; D014630:Vagus Nerve / Q000502:physiology
chemical_list: D005768:Gastrointestinal Hormones; D046911:Macromolecular Substances