If a patient undergoes chemotherapy that causes severe aplastic anemia, why will a blood test taken several weeks later show abnormally low reticulocyte counts?

💡 Explanation

Aplastic anemia involves the suppression of bone marrow, leading to decreased production of all blood cells, including erythrocytes. Because reticulocytes are immature red blood cells produced in the bone marrow, their count will be low; therefore, option B is correct, rather than options A, C, and D, which address other causes of anemia.

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