A patient with a low RBC count receives vitamin B12 injections every 2 weeks. Why?
A. This patient is training for a triathlon.
B. This patient is anemic and has low iron.
C. Parietal cells in this patient's stomach have ceased producing intrinsic factor.
D. This patient's parietal cells have stopped secreting HCl.
Ans: C. Parietal cells in this patient's stomach have ceased producing intrinsic factor.
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