What is the underlying cause of pernicious anemia in untreated gastrectomy patients?
A lack of vitamin B12 (cobalamin) in the diet
B lack of intrinsic factor secreted by gastric parietal cells
C lack of folate (folic acid) in the diet
D inability to absorb dietary iron
E reduced circulating levels of erythropoietin
Answer
Category:
Physiology MCQs
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