title: Gastric and duodenal ulceration: differences.
mesh_terms: D000818:Animals; D001285:Atropine / Q000009:adverse effects*; D004381:Duodenal Ulcer / Q000139:chemically induced*; D006168:Guinea Pigs; D006632:Histamine / Q000009:adverse effects*; D008297:Male; D013276:Stomach Ulcer / Q000139:chemically induced*
chemical_list: D001285:Atropine; D006632:Histamine