Vitamin-B 12  absorption and the Zollinger-Ellison syndrome.
D000136:Acid-Base Equilibrium; D005755:Gastrins / Q000097:blood; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007408:Intestinal Absorption; D007421:Intestine, Small / Q000378:metabolism; D007437:Intrinsic Factor / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D014805:Vitamin B 12 / Q000378:metabolism*; D015043:Zollinger-Ellison Syndrome / Q000378:metabolism*
D005755:Gastrins; D007437:Intrinsic Factor; D014805:Vitamin B 12