Which of the following is (are)associated with decreased hematopoiesis? A)hemorrhage B)vitamin B₁₂ deficiency C)iron deficiency anemia D)restricted blood flow to the kidney E)both vitamin B₁₂ deficiency and iron deficiency anemia

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Both vitamin B12 deficiency and iron deficiency anemia are associated with decreased hematopoiesis. Vitamin B12 is necessary for DNA synthesis in red blood cell precursors, while iron is a critical component of hemoglobin, the molecule that carries oxygen in red blood cells. Hemorrhage and restricted blood flow to the kidney may also affect hematopoiesis, but they are not directly associated with it like vitamin B12 and iron deficiency anemia.

Which of the Following Is (Are)associated with Decreased Hematopoiesis