Medical vagotomy.
D000368:Aged; D001285:Atropine; D002648:Child; D004381:Duodenal Ulcer / Q000601:surgery*; D005260:Female; D005745:Gastric Acidity Determination; D005750:Gastric Juice / Q000378:metabolism*; D006632:Histamine; D006801:Humans; D008297:Male; D010434:Pepsin A / Q000378:metabolism*; D014628:Vagotomy
D001285:Atropine; D006632:Histamine; D010434:Pepsin A