title: Fasting serum gastrin levels in patients with gastroduodenal diseases.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004381:Duodenal Ulcer / Q000097:blood*; D005215:Fasting; D005260:Female; D005755:Gastrins / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011863:Radioimmunoassay; D013274:Stomach Neoplasms / Q000097:blood*; D013276:Stomach Ulcer / Q000097:blood*
chemical_list: D005755:Gastrins