title: A study of some immunological and clinical characteristics of gastritis, gastric ulcer, and duodenal ulcer in three racial groups of the Venezuelan population.
mesh_terms: D000906:Antibodies / Q000032:analysis*; D044383:Black People; D002908:Chronic Disease; D004381:Duodenal Ulcer / Q000276:immunology; D005753:Gastric Mucosa / Q000276:immunology*; D005756:Gastritis / Q000276:immunology*; D005828:Genetics, Population; D006801:Humans; D010437:Peptic Ulcer / Q000276:immunology*; D044469:Racial Groups; D013276:Stomach Ulcer / Q000276:immunology; D014687:Venezuela; D044465:White People
chemical_list: D000906:Antibodies