Viruses and duodenal ulcer.
D000914:Antibodies, Viral / Q000032:analysis; D004381:Duodenal Ulcer / Q000188:drug therapy / Q000209:etiology*; D005260:Female; D006561:Herpes Simplex; D006801:Humans; D008297:Male; D018139:Simplexvirus / Q000276:immunology
D000914:Antibodies, Viral