PREVIEW
Leukemia is a cancer of the blood, characterized by the rapid growth of abnormal blood cells. This uncontrolled growth takes place in your bone marrow, where most of your body's blood is made. Leukemia cells are usually immature (still developing) white blood cells. The term leukemia comes from the Greek words for "white" (leukos) and "blood" (haima).
Unlike other cancers, leukemia doesn't generally form a mass (tumor) that shows...