Definition: A type of cancer that starts from a single cell in the bone marrow whose DNA has been damaged, causing the cell to grow and reproduce out of control.
Examples: Leukemia is a group of cancers of the blood and bone marrow.
Leukemia
From Apply Now, former About.com Guide
Updated: March 27, 2008
About.com Health's Disease and Condition content is reviewed by the Medical Review Board
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