title: Normal serum gastrin concentration in gastrinoma.
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003937:Diagnosis, Differential; D005260:Female; D015408:Gastrinoma / Q000097:blood*; D005755:Gastrins / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000097:blood*; D012633:Secretin; D015043:Zollinger-Ellison Syndrome / Q000175:diagnosis
chemical_list: D005755:Gastrins; D012633:Secretin