Leukemia primarily affects which type of blood cells?

Leukemia primarily affects white blood cells, which are crucial components of the immune system. In leukemia, there is an abnormal proliferation of these cells, leading to an increase in immature or dysfunctional white blood cells. This overproduction can disrupt the balance of blood cell types, impairing the body's ability to fight infections and perform other critical functions.

White blood cells include various types, such as lymphocytes and myeloid cells, and in leukemia, these can become cancerous. The disease primarily interferes with the normal functioning of the bone marrow, where blood cells are produced, ultimately leading to reduced levels of red blood cells and platelets as well.

Other blood components, such as platelets and red blood cells, are affected indirectly as the white blood cell overproduction can hinder their proper formation. Plasma cells, which are derived from B lymphocytes and are responsible for producing antibodies, are also not the primary target in leukemia. Thus, the correct association of leukemia with white blood cells highlights the disease's nature and its impact on the blood and immune system.