Serum gastrin and gastric acidity.
D004381:Duodenal Ulcer / Q000097:blood; D005745:Gastric Acidity Determination; D005750:Gastric Juice / Q000032:analysis*; D005755:Gastrins / Q000097:blood*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D013276:Stomach Ulcer / Q000097:blood
D005755:Gastrins