title: Severe megaloblastic anemia due to nutritional vitamin B12 deficiency.
mesh_terms: D000328:Adult; D000747:Anemia, Hypochromic / Q000209:etiology; D000748:Anemia, Macrocytic / Q000209:etiology* / Q000628:therapy; D001803:Blood Transfusion; D001856:Bone Marrow Examination; D004906:Erythrocyte Count; D004920:Erythropoiesis / Q000187:drug effects; D005260:Female; D006400:Hematocrit; D006452:Hemoglobinometry; D006801:Humans; D007501:Iron / Q000097:blood; D009748:Nutrition Disorders / Q000150:complications*; D009751:Nutritional Requirements; D012546:Schilling Test; D014805:Vitamin B 12 / Q000627:therapeutic use; D014806:Vitamin B 12 Deficiency / Q000150:complications*
chemical_list: D007501:Iron; D014805:Vitamin B 12