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What does leukemia primarily affect?

  1. The skeletal system

  2. The nervous system

  3. The blood-forming tissues

  4. The digestive system

The correct answer is: The blood-forming tissues

Leukemia primarily affects the blood-forming tissues, which includes the bone marrow and the lymphatic system. This condition is characterized by the uncontrolled proliferation of abnormal white blood cells. As these cells are produced in the bone marrow, they disrupt the normal production of other blood cells, including red blood cells and platelets. This disruption can lead to various health issues, such as anemia, increased risk of infections, and bleeding problems, due to the lack of healthy blood cells. Understanding that leukemia targets the blood-forming tissues helps to clarify its systemic impact and the importance of diagnosing and treating this disease effectively.