Question 269 · LEK · Introduction
An increase in the mean corpuscular volume (MCV) may be caused by:
- A. vitamin B₁₂insufficiency.
- B. folic acid insufficiency.
- C. iron insufficiency.
- D. A and B are true.
- E. A and C are true.
Hint
Consider which deficiencies impair DNA synthesis in erythroblasts and which one impairs haemoglobin synthesis.
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