title: Impaired absorption of egg vitamin B 12  in postgastrectomy and achlorhydric patients.
mesh_terms: D000126:Achlorhydria / Q000378:metabolism*; D004531:Eggs; D005743:Gastrectomy; D005753:Gastric Mucosa / Q000378:metabolism; D006801:Humans; D007408:Intestinal Absorption; D014805:Vitamin B 12 / Q000378:metabolism*
chemical_list: D014805:Vitamin B 12