Selective malabsorption of vitamin B 12.
D000328:Adult; D000752:Anemia, Pernicious / Q000276:immunology / Q000378:metabolism*; D001323:Autoantibodies; D002648:Child; D005750:Gastric Juice / Q000032:analysis / Q000276:immunology; D006801:Humans; D007437:Intrinsic Factor / Q000037:antagonists & inhibitors*; D008286:Malabsorption Syndromes / Q000378:metabolism*; D014805:Vitamin B 12 / Q000378:metabolism*
D001323:Autoantibodies; D007437:Intrinsic Factor; D014805:Vitamin B 12