Leukemia And Lymphoma~What Is Leukemia? Leukemia is a cancer of the white blood cells, which help fight infection. It is caused by the uncontrolled growth of these cells.

Leukemia starts in the bone marrow, which is the spongy part inside the bones where blood cells are made. The cancer cells spread to the blood that circulates in the arteries and veins. Read the rest of this entry »