What is leukemia? | Hematologic System Diseases | NCLEX-RN | Khan Academy

Leukemia is a collection of cancers which create a large amount of immature blood cells. These immature blood cells take up space in the bone marrow, preventing the bone marrow from making healthy blood cells such as platelets, red blood cells, and white blood cells. Learn about the symptoms of this disease which include prolonged bleeding, frequent infections, and bone pain. Created by Nauroz Syed.

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